A researcher conducted a study of 34 scientists (Grim, 2008). He reported a correlation between the amount of beer each scientist drank per year and the likelihood of that scientist publishing a scientific paper. The correlation was reported as r = -0.55, p < .01. a) What does a negative correlation mean in this example? (What does it tell you about beer and publishing papers?) Is this relationship strong or weak? How do you know? b) What does p < .01 mean in this result? (Tell me what p means. Tell me what the .01 means. Tell me what this means for the study.) a) What might happen to this correlation if you added one person in the sample who drank much more beer than other scientists and also published far fewer papers than other scientists? (Will the correlation get stronger? Weaker?) Is this a good thing or a bad thing for the study? Why or why not?
Answers
A negative correlation in this example means that as the amount of beer each scientist drinks per year increases, the likelihood of publishing a scientific paper decreases. In other words, there is an inverse relationship between beer consumption and publishing papers.
The correlation coefficient, r = -0.55, indicates a moderate negative correlation. The magnitude of the correlation coefficient, which ranges from -1 to +1, helps determine the strength of the relationship. In this case, the correlation is closer to -1, suggesting a relatively strong negative relationship.
b) The notation "p < .01" indicates that the p-value associated with the correlation coefficient is less than 0.01. In statistical hypothesis testing, the p-value represents the probability of obtaining a correlation coefficient as extreme as the observed value, assuming the null hypothesis is true. In this case, a p-value of less than 0.01 suggests strong evidence against the null hypothesis and indicates that the observed correlation is unlikely to occur by chance.
Adding one person to the sample who drank much more beer and published far fewer papers could potentially impact the correlation. If this person's data significantly deviates from the rest of the sample, it could strengthen or weaken the correlation depending on the direction of their values. If the additional person's beer consumption is even higher and their paper publication is even lower compared to the other scientists, it may strengthen the negative correlation. Conversely, if their values are more in line with the overall pattern of the sample, it may not have a substantial impact on the correlation.
This scenario is neither inherently good nor bad for the study. It depends on the research question and the purpose of the study. If the goal is to examine the relationship between beer consumption and paper publication within the specific sample of scientists, the inclusion of an extreme data point can provide valuable insights into potential outliers and the robustness of the correlation.
However, if the aim is to generalize the findings to a broader population, the extreme data point may introduce bias and limit the generalizability of the results.
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Related Questions
The system of equations is solved using the linear combination method.
StartLayout 1st row 1st column one-half x + 4 y = 8 right-arrow 2nd column negative 2 (one-half x + 4 y = 8) right-arrow 3rd column negative x minus 8 y = negative 16 2nd row 1st column 3 x + 24 y = 12 right-arrow 2nd column one-third (3 x + 24 y = 12) right arrow x + 8 y = 4 with Bar Underscript 3rd row 3rd column 0 = negative 12 EndLayout
What does 0 = −12 mean regarding the solution to the system?
There are no solutions to the system because the equations represent parallel lines.
There are no solutions to the system because the equations represent the same line.
There are infinitely many solutions to the system because the equations represent parallel lines.
There are infinitely many solutions to the system because the equations represent the same line.
Answers
Answer: The answer is A) There are no solutions to the system because the equations represent parallel lines.
Step-by-step explanation: got it on edge 2022
Answer:
There are no solutions to the system because the equations represent parallel lines
Step-by-step explanation:
anyone know what to do no bot answer please they are annoying very annoying..
Answers
Answer:
5
Step-by-step explanation:
Hope it helps. :D
Answer:
144 I think have a good day
The question is “what does zero mean to you?”
PS: this is 7th grade math and we’re learning about integers
Can somebody help me with this question???
Thanks you all
Answers
Answer:Zero is neither a positive nor a negative integer, It is a neutral number i.e. zero has no sign (+ or -).
Step-by-step explanation:
i
You may need to use the appropriate appendix table or technology to answer this question.
A population has a mean of 800 and a standard deviation of 200. Suppose a sample of size 400 is selected and
x
is used to estimate μ. (Round your answers to four decimal places.)
(a)____
What is the probability that the sample mean will be within ±5 of the population mean?
(b)___
What is the probability that the sample mean will be within ±10 of the population mean?
Answers
a. The probability that the sample mean will be within ±5 of the population mean is the area under the normal curve between these two z-scores. b. The lower bound z-score is (-10 - 0) / 10 = -1, and the upper bound z-score is (10 - 0) / 10 = 1. We can use the same normal distribution table or technology to find the probability associated with these z-scores.
(a) To find the probability that the sample mean will be within ±5 of the population mean, we can use the Central Limit Theorem (CLT) and the properties of a normal distribution.
The sample mean, is an unbiased estimator of the population mean, μ. According to the CLT, the distribution of sample means approaches a normal distribution with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.
= 200 / √400
= 200 / 20
= 10
To find the probability that the sample mean will be within ±5 of the population mean, we can standardize the interval using the z-score:
For the lower bound (-5), the z-score is (-5 - 0) / 10 = -0.5.
For the upper bound (+5), the z-score is (5 - 0) / 10 = 0.5.
We can now use a standard normal distribution table or technology (such as a calculator or statistical software) to find the probability associated with the z-scores -0.5 and 0.5. The probability that the sample mean will be within ±5 of the population mean is the area under the normal curve between these two z-scores.
(b) To find the probability that the sample mean will be within ±10 of the population mean, we follow the same steps as in part (a).
The lower bound z-score is (-10 - 0) / 10 = -1, and the upper bound z-score is (10 - 0) / 10 = 1. We can use the same normal distribution table or technology to find the probability associated with these z-scores.
Note: Since the question mentions rounding answers to four decimal places, please use the appropriate table or technology to obtain the precise probabilities for parts (a) and (b).
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From a table of integrals, we know that for ,≠0a,b≠0,
∫cos()=⋅cos()+sin()2+2+.∫eatcos(bt)dt=eat⋅acos(bt)+bsin(bt)a2+b2+C.
Use this antiderivative to compute the following improper integral:
∫[infinity]01cos(3)− = limT→[infinity]∫0[infinity]e1tcos(3t)e−stdt = limT→[infinity] if ≠1s≠1
or
∫[infinity]01cos(3)− = limT→[infinity]∫0[infinity]e1tcos(3t)e−stdt = limT→[infinity] if =1.s=1. help (formulas)
For which values of s do the limits above exist? In other words, what is the domain of the Laplace transform of 1cos(3)e1tcos(3t)?
help (inequalities)
Evaluate the existing limit to compute the Laplace transform of 1cos(3)e1tcos(3t) on the domain you determined in the previous part:
()=L{e^1t cos(3)}=
Answers
"From a table of integrals, we know that for \(\(a \neq 0\)\) and \(\(b \neq 0\):\)
\(\[\int \cos(at) \, dt = \frac{1}{a} \cdot \cos(at) + \frac{1}{b} \cdot \sin(bt) + C\]\)
and
\(\[\int e^a t \cos(bt) \, dt = \frac{e^{at}}{a} \cdot \cos(bt) + \frac{b}{a^2 + b^2} \cdot \sin(bt) + C\]\)
Use this antiderivative to compute the following improper integral:
\(\[\int_{-\infty}^{0} \cos(3t) \, dt = \lim_{{T \to \infty}} \int_{0}^{T} e^t \cos(3t) \, e^{-st} \, dt = \lim_{{T \to \infty}} \text{ if } s \neq 1, \, \text{ or } \lim_{{T \to \infty}} \text{ if } s = 1.\]\)
For which values of \(\(s\)\) do the limits above exist? In other words, what is the domain of the Laplace transform of \(\(\frac{1}{\cos(3)} \cdot e^t \cos(3t)\)\)?
Evaluate the existing limit to compute the Laplace transform of on the domain you determined in the previous part:
\(\[L\{e^t \cos(3t)\\).
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If someone can answer this your a life saver
Answers
Answer:
m = 2
Step-by-step explanation:
Slope = rise/run or (y2 - y1) / (x2 - x1)
P = (-5, 2) Q = (-3, 6)
We see the y increase by 4 and x increase by 2, so the slope is
m = 4/2 = 2
in a pitch black room you have a drawer with 27 black socks, 18 grey socks, and 9 navy socks. how many socks do you take out to ensure you get a pair that is not navy?
Answers
There is a 5/6 probability that you will remove pairs of socks to make sure you obtain a pair that is not navy.
What is probability?Simply put, the probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes.
Statistics is the study of events that follow a probability distribution.
So, we know that:
27 black socks.
18 grey socks.
9 navy socks.
Probability formula: P(E) = Favouravle events/Total events
Now, insert values in the formula as follows:
P(E) = Favouravle events/Total events
P(E) = 27+18/27+18+9
P(E) = 45/54
P(E) = 15/18
P(E) = 5/6
Therefore, there is a 5/6 probability that you will remove pairs of socks to make sure you obtain a pair that is not navy.
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Correct question:
in a pitch-black room, you have a drawer with 27 black socks, 18 grey socks, and 9 navy socks. What is the probability that you take out pairs of socks to ensure you get a pair that is not navy?
What is the value -134+53
Answers
Answer:
To find -134 + 53, add the ones place (4+3=7) and the tens place (5+3=8), giving you -81.
Answer: -81.
Answer:
-81
Step-by-step explanation:
You subtract the absolute values and take the sign of the larger absolute value.
Absolute value is the distance from zero. This will be a positive number
134 - 53 = 81
The sign will be negative because the sign of the higher absolute value number is negative. 134 has a larger absolute value than 53 and it is negative, so our answer is negative.
Helping in the name of Jesus.
help ASAP Ill give you brainliest
Answers
Answer:
none of these
Step-by-step explanation:
There are 3 boys walking
There are a total of 20 people
3/20 = 0.15
That is 15 percent, therefore none of these answers.
Step-by-step explanation:
any has at least one mode
Can someone please help me please?
Answers
Answer:
Step-by-step explanation:
write an equation in slope-intercept form for the line perpendicular to y=−4x 1y=-4x 1 that passes through the point (−7,1)-7,1.
Answers
The equation in slope-intercept form for the line perpendicular to \(\(y=-4x+1\)\) that passes through the point \(\((-7,1)\)\) is \(\(y = \frac{1}{4}x + \frac{5}{4}\)\).
The given equation represents a line with a slope of -4. To find the slope of a line perpendicular to it, we take the negative reciprocal of the slope, which is \(\(\frac{1}{4}\)\). Using the point-slope form of a line, we can substitute the values of the slope \((\(\frac{1}{4}\))\) and the coordinates of the given point \((\((-7,1)\))\) into the equation. The point-slope form is \(\(y - y_1 = m(x - x_1)\),\) where \(\((x_1, y_1)\)\) represents the coordinates of the point and m is the slope. By substituting the values, we get \(\(y - 1 = \frac{1}{4}(x + 7)\)\). To convert this equation into the slope-intercept form \((\(y = mx + b\))\), we simplify it to \(\(y = \frac{1}{4}x + \frac{5}{4}\)\), where \(\(\frac{5}{4}\)\) is the y-intercept. Thus, the equation in slope-intercept form for the line perpendicular to \(\(y = -4x + 1\)\) that passes through the point -7,1 is \(\(y = \frac{1}{4}x + \frac{5}{4}\)\).
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Tina needs to mix 2 gallons of water with one cup of iced tea mix to make the tea. Tina only has a 1 cup measure. How many cups of water does she need to make the iced tea?
A 4 cups
B 8 cups
C 16 cups
D 32 cups
Answers
Tina will need 32 cups of water to make the iced tea.
5b-b-1 > or equal too-11
Answers
Answer:
-2.5
Step-by-step explanation:
5b - b - 1 ≥ -11
4b - 1 ≥ -11
+1 +1
4b ≥ -10
4/4 -10/4
b ≥ -2.5
Answer:
b ≥ \(-\frac{5}{2}\)
Step-by-step explanation:
The expression:
5b - b - 1 ≥ -11
Now to solve this problem, we must be aware of some rules of inequality.
When dividing or multiplying with a negative value, the sign of the inequality must change;
5b - b - 1 ≥ -11
4b - 1 ≥ -11
Add + 1 to both sides;
4b -1 + 1 ≥ -11 + 1
4b ≥ -10
Now divided both sides by 4;
\(\frac{4b}{4}\) ≥ \(\frac{-10}{4}\)
b ≥ \(-\frac{5}{2}\)
a certain field is a rectangle with a perimeter of feet. the length is feet more than the width. find the width and length of the rectangular field.
Answers
The length and width of the rectangular field is 316 ft and 133 ft respectively.
An algebraic equation is a mathematical statement that equalises two expressions. A variable, coefficients, and constants are common components of an algebraic equation. Also look into Algebraic Expressions. Equality is represented by equations or the equal sign.
It is balanced because both sides are equal in value. To avoid making an error that throws the equation out of balance, ensure that any change on one side is reciprocated on the other.
Given,
perimeter of rectangular field = 898 ft
let width be 'x'
then,
length = x+183
The perimeter of a rectangle is,
\(P = 2(length + width)\\\\898 = 2( ( x + 183 ) + x )\\\\898 = 2(2x+183)\\\\898 = 4x + 366\\\\4x = 898 - 366\\\\4x = 532\\\\x=\frac{532}{4}\\\\x=133\)
Thus, the width is 133 ft and length is (133+183)=316 ft.
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Your question is incomplete, here is the complete question.
A certain field is a rectangle with a perimeter of 898 ft. The length is 183 ft more then the width. Find the width and length of the rectangular field?
Show the work.
6 2. Given f(x) dx = 8 and 5 f(x) dx = -1, evaluate: = 0 6 a. f (x) dx = = Sisu S. Sw) = b. f(x) dx = 0 9 Si so wa 6 6 c. f(x) dx = = d. 3f(x) dx = = lo 6
Answers
a. The value of the definite integral of f(x) from 0 to 6 is 8. b. The value of the definite integral of f(x) from 0 to 9 is 6. c. The value of the definite integral of f(x) from 0 to 6 is 0. d. The value of the definite integral of 3f(x) from 0 to 6 is 0.
a. The definite integral of f(x) from 0 to 6 is equal to 8. This means that the area under the curve of f(x) between x = 0 and x = 6 is equal to 8.
b. The definite integral of f(x) from 0 to 9 is equal to 6. This indicates that the area under the curve of f(x) between x = 0 and x = 9 is equal to 6.
c. The definite integral of f(x) from 0 to 6 is equal to 0. This implies that the area under the curve of f(x) between x = 0 and x = 6 is zero. The function f(x) may have positive and negative areas that cancel each other out, resulting in a net area of zero.
d. The definite integral of 3f(x) from 0 to 6 is equal to 0. This means that the area under the curve of 3f(x) between x = 0 and x = 6 is zero. Since we are multiplying the function f(x) by 3, the areas above the x-axis and below the x-axis cancel each other out, resulting in a net area of zero.
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If the 90% confidence limits for the population mean are 34 and 46, which of the following could be the 99% confidence limits a) (36, 41) b) (39,41) c(30, 50) d) (39,43) e) (38, 45) f) None of the above
Answers
The potential candidates for the 99% confidence limits are options (36, 41) , (39, 41), (39, 43), (38, 45).
Confidence limits (34 and 46) for the population mean can be the 99% confidence limits, we need to compare the confidence levels.
The confidence level represents the probability that the true population parameter (in this case, the mean) falls within the confidence interval.
A 90% confidence level means that there is a 90% probability that the true population mean is within the given interval (34, 46).
A 99% confidence level means that there is a higher probability, 99%, that the true population mean is within the confidence interval.
Now, let's evaluate the given answer choices:
a) (36, 41): This is a 99% confidence interval. It is a potential candidate.
b) (39, 41): This is a 99% confidence interval. It is a potential candidate.
c) (30, 50): This is a wider interval than the given 90% confidence interval and may not be valid.
d) (39, 43): This is a 99% confidence interval. It is a potential candidate.
e) (38, 45): This is a 99% confidence interval. It is a potential candidate.
f) None of the above: We have found potential candidates from the given options, so this is not the correct answer.
Based on the evaluation, the potential candidates for the 99% confidence limits are options a), b), d), and e).
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PLEASE HELP ASAP IM FREAKING OUT
Answers
Answer:
30 cm
Step-by-step explanation:
Make sure all units are the same!
P = Perimeter
A = Area
Formula used for similar figures:
\(\frac{A_{1}}{A_{2}} = (\frac{l_{1}}{l_{2}})^{2}\) —- eq(i)
\(\frac{P_{1}}{P_{2}} = \frac{l_{1}}{l_{2}}\) ———— eq(ii)
Applying eq(ii):
∴\(\frac{25}{P_{2}} = \frac{10}{12}\)
Cross-multiplication is applied:
\((25)(12) = 10P_{2}\)
\(300 = 10P_{2}\)
\(P_{2}\) has to be isolated and made the subject of the equation:
\(P_{2} = \frac{300}{10}\)
∴Perimeter of second figure = 30 cm
The question is in the image. I really need help, please.
Answers
Answer:
(b) 65/27
Step-by-step explanation:
Here, we notice the index for the summation runs from 0 to 3, so there are a total of 4 terms.
The sum represented by the summation symbol is ...
5(-2/3)^0 +5(-2/3)^1 +5(-2/3)^2 +5(-2/3)^3
= 5(1 -2/3 +4/9 -8/27)
= 5/27(27 -18 +12 -8)
= 5(13/27) = 65/27
__
There is a formula for the sum of a geometric series:
Sn = a1×(1 -r^n)/(1 -r)
Here, the first term is a1 = 5(-2/3)^0 = 5. The common ratio is the base of the exponential, r = -2/3. So, the sum of n=4 terms is ...
S4 = 5×(1 -(-2/3)^4)/(1 -(-2/3)) = 5×(1 -16/81)/(5/3) = 65/27
I need help pls help me with this i still dont know how to do it
Answers
Answer: u multiply them all together
Step-by-step explanation:nugggybi8ybggg8yiubgy8iibgu777777777b8u
EFGH is a parallelogram. Find m
Answers
Answer:
70°
Step-by-step explanation:
Sum of angles in a parallelogram is 360°
Opposite angles are equal
2(16x - 2) + 2(8x + 14) = 360°
32x - 4 + 16x + 28 = 360°
32x + 16x + 28 - 4 = 360°
48x + 24 = 360°
48x = 360 - 24
48x = 336
x = 7
m< E = 8x + 14
Substitute for x
= 8(7) + 14
= 56 + 14
= 70°
(3,4) and (-5,0)
Using the slope formula above, find the slope of the line between two points.
Answers
Answer:
1/2
Step-by-step explanation:
as x increases by 8, y increases by 4, simplify and you get as x increases by 2, y increases by 1
Find the missing leg
Answers
Omg the legs are gonee
fr where are the legs
What is order of magnitude?
Answers
The magnitude of the number of the minutes in the school is 2.
What magnitude is 0 in?Although the order of magnitude of zero is not specified, it is occasionally stated to have a magnitude of. Zero is less than any other positive number, and so is its order of magnitude, according to this infinitely negative order of magnitude.
Can a magnitude order be negative?There can be no negative magnitude. The component of the vector that lacks direction is its length (positive or negative).
The order of magnitude is the approximate representation of the logarithmic of the order's value and is typically considered to be 10 taken as the base.
On a scale of 10 logarithmic, the difference in the order of magnitude can be quantified.
The value storage is where you may find the number into the various magnetic.
As a result, the number of minutes spent in school is 2.
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Complete question -
What is the Order of Magnitude of the number of minutes in a school day?
In 2012 there were approximately 800 elves working at the North Pole. A survey found that 88% of these elves enjoyed their work conditions.
Answers
Answer:
704 people out of 800
Step-by-step explanation:
88% of 800= 704
Please help.. I'm really stuck
Answers
Answer:
C. C only
Step-by-step explanation:
Well to determine if the given graphs are functions we need to do the vertical line test to all the graphs,
A. This fails the vertical line test because the vertical line could pass through 2 points on the lines.
B. this also fails because a vertical line could pass through 2 points.
C. This passes because the vertical line doesn’t touch 2 points.
A quadrilateral has congruent side lengths. 2 opposite angles have measures of 100 degrees. The other 2 opposite angles have measures of 70 degrees and (5 x) degrees.
What is the value of x?
14
15
16
17
Answers
Answer:
14
Step-by-step explanation:
fjgejrguiy4fvjbbyeuakg2y5765n
Pls answer this for me. ASAP
Answers
Answer:
Step-by-step explanation:
1) From AP to PB
we get , from part to part that ,
AP=(1/2)*PB or
PB = 2*AP
2) from part to whole,
AP to AB, we get
AP = (1/3)*AB
or AB = 3*AP
E Question Help
1.3.AP-9
Two hikers are 22 miles apart and walking toward each other. They meet in 4 hours. Find the rate of each hiker if one hiker walks 1.1 mph faster than the other
The speed of the slow hiker is mph, and the speed of the fast hiker is mph.
Answers
Step-by-step explanation:
Since, the hiker are walking at different speeds they meet at a point not in the middle.
Let distance travelled by Hiker A (slower) be x at speed s.
So, distance travelled by Hiker B (faster) is (22 - x) at a speed (s + 1.1) .
\(speed \: = \frac{distance}{time} \)
s = x / 4s + 1.1 = 22 - x / 4Solving equations 1 and 2, we get :
x = 8.8m and s = 2.2mph
Therefore,
Speed of Hiker A = 2.2 mph
Speed of Hiker A = 2.2 mphSpeed of Hiker B = 3.3 mph
The costs of repairing iPads in UAE are normally distributed with a mean of 173 Dhs. If
3%
of the costs exceed 243 Dhs, find the standard deviation of the costs. Round your answer to the nearest diham (Whole number).
Answers
The standard deviation of the costs is 37 Dhs
The given mean is 173 and 3% of costs exceed 243. We have to calculate the standard deviation of the cost. Therefore, let's first start by calculating the z-score as follows;z-score formula = `(x - μ) / σ`z-score = `243 - 173 / σ`z-score = `70 / σ`We need to find the standard deviation of the costs. Since the z-score formula includes standard deviation, we can first calculate the z-score and then use it to calculate the standard deviation.Using the z-table, we can find the z-score for 3% = -1.88-1.88 = (243 - 173) / σσ = (243 - 173) / -1.88σ = -70 / -1.88σ = 37.23≈ 37The standard deviation of the costs is 37 Dhs. Hence, the correct option is as follows.Option D is the correct option.
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Evaluate the expression using the order of operations. Show your work. plsssss i will make you brainliest
Answers
Read from top to bottom, the one with the arrow is left to right
