Answer:
C
Step-by-step explanation:
So what you gotta do is count the lines. You don't count the one with one on it, but you count all the way through to 2. That gets you eight, so each line is 1/8. 1-2 in 1/8 intervals. 1 1/4 multiply 2 on the numerator and denominator gets 1 2/8, 1 1/2 multiply 4 on the numerator and denominator gets you 1 4/8. Counting the lines, each of those matches up. The first interval is 1 1/8.
PLEASE HELP MEEEEEEEEEEEEE
the mean cost of domestic airfares in the united states rose to an all-time high of $385 per ticket. airfares were based on the total ticket value, which consisted of the price charged by the airline plus any additional taxes and fees. assume domestic airfares are normally distributed with a standard deviation of $110. answer to four decimals. what is the probability domestic airfare is $250 or less.
The probability 11.1% of domestic airfares within the United States are $250 or less.
Define the term standard deviation?A square root of variance is used to calculate the standard deviation, a statistic that illustrates how distributed widely a dataset is in relation to its mean. By evaluating the deviation of each data point from the mean, the standard deviation may be approximated as the square root of variance.The formula for the z score is -
z = (x - μ)/σ
In which,
μ = mean = $385 per ticketσ = standard deviation = $110x = sample value = $250 or less.Substitute the value in formula.
P(x ≤ 250) = (250 - 385)/100
P(x ≤ 250) = -1.22
Select the p value from negative z score table;
P(x ≤ 250) = 0.111
P(x ≤ 250) = 11.1%
Thus, 11.1% of domestic flights within the United States are $250 or less.
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Purpose is important because it reminds you why you're doing what you're doing when things get tough
O True
O False
The reliability of a test is its ability to do which of the following?
A. Measure what it's supposed to measure
B. Yield the same results when given a second time
C. Give an unbiased score
D. All of the above
A reliable test is one that can measure what it is supposed to measure consistently, yield the same results when given a second time, and provide an unbiased score, ensuring that the results obtained are valid and reliable. Answer is D.
The reliability of a test refers to its consistency and stability over time and under different conditions. It is the extent to which a test is able to yield the same results repeatedly. A reliable test should be able to measure what it is supposed to measure consistently, without any errors or fluctuations. Additionally, it should provide an unbiased score, which means that it should not be influenced by any external factors such as personal biases or environmental factors. Therefore, the answer to the question is D, all of the above.
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For each scenario, explain why the random variable does NOT have a binomial distribution.
Q1:A bucket contains 10 colored tokens with five that are red and five that are blue. Four tokens are drawn at random from the bucket one at a time, but without replacing the tokens drawn. X1 is the number of red tokens selected.
Q2:A fair coin is tossed repeatedly until the tenth head is tossed. X2 is the number of tails tossed prior to the tenth head.
Q3:Four buckets each contain a total of five tokens each, some red and some blue. The number of red tokens in the buckets are 1, 2, 3, and 4 with blue tokens making up the remainder. One token is drawn at random from each bucket. X3 is the total number of red tokens drawn.
The scenarios do not have a binomial distribution because they violate the requirements of independence, fixed number of trials, and constant probability of success.
Q1: The random variable X1, which represents the number of red tokens selected from the bucket, does not have a binomial distribution because the sampling is done without replacement. In a binomial distribution, each trial must be independent and have the same probability of success. However, in this scenario, the probability of selecting a red token changes with each draw as the number of red tokens in the bucket decreases. Therefore, the trials are not independent, and the distribution cannot be binomial.
Q2: The random variable X2, which represents the number of tails tossed prior to the tenth head in repeated coin tosses, does not have a binomial distribution because the number of trials is not fixed. In a binomial distribution, the number of trials must be predetermined and fixed. However, in this scenario, the number of coin tosses is not fixed and can vary until the tenth head is obtained. Therefore, the number of tails tossed prior to the tenth head does not follow a binomial distribution.
Q3: The random variable X3, which represents the total number of red tokens drawn from four buckets, does not have a binomial distribution because the probabilities of success (drawing a red token) are not constant across the buckets. In a binomial distribution, each trial must have the same probability of success. However, in this scenario, each bucket has a different number of red tokens, resulting in different probabilities of drawing a red token. Therefore, the trials are not identically distributed, and the distribution cannot be binomial.
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Find the measure of angles x, y, and z in the figure.
\(x=106^{\circ}\) (linear pair)
\(y=106^{\circ}\) (corresponding angles with \(x\))
\(z=106^{\circ}\) (vertical angles with \(y\))
The measure of angles x, y, and z are 106 degree.
How to find the measure of angles x, y, and z?The following are total angle measurements: An angles that add up to 180 degrees.
When two rays are united at a common point, an angle is created. The two rays are referred to as the arms of the angle, while the common point is referred to as the node or vertex. The symbol "" stands for the angle. The Latin word "Angulus" is where the term "angle" originated. Find out more about angles and lines here.
x = 180 - 76 = 106 degree
so,
x = 106 degree is linear pair
y is 106 degree is corresponding angles with
z is 106 vertical angles with
The measure of angles x, y, and z are 106 degree.
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The average monthly temperature T(m), in degrees Celsius, in a particular city varies according to the model T of m equals 4 times sine of the quantity pi over 6 times m end quantity plus 2 comma where m represents the months of the year and January begins at m = 0. Between what months will the temperature be below 0°C?
The months with temperature below 0° is August and October.
GIven,
T(m) = 4 sin (π/6 m)₊2
In the above equation, T(m) is the average temperature in a month in degrees Fahrenheit, and m is the month of the year.
T(8) = 4 sin (8π/6 m)₊2
= 4 sin (4π/3 )₊2
= 4 sin (π₊π/3 )₊2
= ₋4 sin π/3 ₊2
= ₋4×√3/2 ₊2
= ₋2√3 ₊ 2 <0
The function for the average monthly temperature, in m months from january is given by
T(0) = 4 sin(10π/6) ₊ 2
= 4 sin(5π/3) ₊ 2
= 4 sin(2π ₋ π/3) ₊ 2
= - 4sin π/3 ₊ 2 = ₋4 × √3/2 ₊ 2
= ₋2√3 ₊2<0
we can notice that after january, from august till october the months will face temperature below 0 degrees.
So the answer is August and October.
Your question is incomplete. Please find the missing content here.
The average monthly temperature T(m), in degrees Celsius, in a particular city varies according to the model T of m equals 4 times sine of the quantity pi over 6 times m end quantity plus 2 comma where m represents the months of the year and January begins at m = 0. Between what months will the temperature be below 0°C?
July and NovemberJuly and OctoberAugust and NovemberAugust and OctoberLearn more about "temperature problems" here-
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a = 2, b = 3, c = 4 and d = 12
20 - 2b/ a (2b/a is supposed to be a fraction)
The expression when evaluated is 17
How to evaluate the expressionFrom the question, we have the following parameters that can be used in our computation:
a = 2, b = 3, c = 4 and d = 12
Also, we have
20 - 2b/a
Substitute the known values in the above equation, so, we have the following representation
20 - 2b/a = 20 - 2 * 3/2
Evaluate
20 - 2b/a = 17
Hence, the solution is 17
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Please help me please thank you so much in advance
Answer:
147
Step-by-step explanation:
trust me im Really Smart GIVE ME BRAINLIST just did this question im first
Answer:
What is the question? BUT off guess I'm assuming its option (C) - 147
Step-by-step explanation:
Hope this helped if so please leave a rating! :)
THANKS!
a teacher is experimenting with computer-based instruction. in which situation could the teacher use a hypothesis test for a population mean? group of answer choices
The teacher could use a hypothesis test for a population mean in the following situation:
The teacher wants to determine if computer-based instruction has a statistically significant effect on the average test scores of students in the class. The teacher can collect a sample of test scores from students who received computer-based instruction and a sample of test scores from students who did not receive computer-based instruction. Then, the teacher can use a hypothesis test for the population mean to compare the mean test scores of the two groups and determine if the difference is statistically significant.
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Complete question:
teacher is experimenting with computer-based instruction In which situation could the teacher use a hypothesis test for a ifference in two population means?
O The teacher uses a combination of treditional methods and computer based instruction She asks students # they lked computer based instruction better She wants to determine if the maorty prete the computer-based instruction
O She gives each student a pretest Then she teaches a lesson using a computer program Afterwards, she gives each student a postest The teacher wants to see f the difference in scores willshow an improvement 。
She ran om y d des the class into t goups One gup ecerves computer based instruction The other group recen es tradit na n rete wit t copters Ahe rst eten een student ha to solve a single problem. The teachers wants to compare the proportion of each group who can solve the problem 。She gives each student a pretest he then randomly dvides the class mto two groups.
Ο e group receves compte based i struct . The other go p eceves tradtind rst cto with t computers After instruction each student takes a post test. The teacher compares the improvement in scores (post test minus pretest) in the two groups
4x2+(5x−7x2)+8−(4x+2)?
Answer:
Step-by-step explanation:
I work through my mind, so I can’t really give this explanation with a good or with words I don’t know what x means
HELP HELP HELP HELP
show the steps too. I'll give BRAINLIEST!
Kristina walks from her house, around the park, to the store. She is interested in taking a shortcut through the park to save time. Approximately how far away from her house is the store, if she were to follow the path shown by the dotted line in the graphic below?* HOUSE PARK 80 m 100 m STOR O 134 m O 128 m O 180 m 200 m nal. If a 65 inch television has 1 point
If she follows the path shown by the dotted line in the graph, the distance from her house to the store would be = 128m. That is option B.
How to calculate the distance between her house and the store?To calculate the distance between her house and the store the Pythagorean formula should be used which is given as follows;
C² = a² + b²
where;
a= 80
b= 100
c= ?
That is;
c²= 80²+100²
= 6400+10000
= 16,400
c = √16400
= 128.1m
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Cynthia invests some money in a bank which pays
5% compound interest per year.
She wants it to be worth over £8000 at the end of 3 years.
What is the smallest amount, to the nearest pound, she can invest?
Answer: £6910.7
Step-by-step explanation:
Given
Rate \(R=5\ \%\)
Amount \(A=\)£\(8000\)
Time \(T=3\ years\)
In compound interest, the Amount is given by
\(A=P[1+\frac{R}{100}]^T\)
\(8000=P[1+\frac{5}{100}]^3\)
\(P=\dfrac{8000}{1.1576}\)
\(P=\)£\(6910.7\)
Kito makes on online purchase of a guitar case for $39. 99, a tuner for $24. 99 and picks for $26. 99. Taxes are 6% of the total purchase price. Shipping charges are based on the following table: Amount of Purchase Standard Shipping Express Shipping up to $50 $5. 10 $7. 00 $50 up to $100 $6. 35 $8. 20 $100 up to $200 $7. 80 $11. 60 $200 and over $10. 50 $16. 45 Kito selects express shipping and the company bills his credit card $105. 69 for the total of the online purchase. Determine if Kito has been billed correctly for his purchase. A. Kito has been billed correctly. B. Kito has not been charged enough for his purchase. C. Kito has been over charged by $1. 85 for his purchase. D. Kito has been over charged by $3. 40 for his purchase. Please select the best answer from the choices provided A B C D.
We can see that Kito has been billed correctly for his purchase. Hence, the correct option is A. Kito has been billed correctly.
Given that Kito made an online purchase of a guitar case for $39.99, a tuner for $24.99, and picks for $26.99, we can calculate the total purchase price as follows: Total Purchase Price = Cost of Guitar Case + Cost of Tuner + Cost of Picks= $39.99 + $24.99 + $26.99= $91.97
Now, taxes are 6% of the total purchase price. So, the tax amount will be: Tax Amount = 6% of Total Purchase Price= 6/100 × $91.97= $5.52
Therefore, the total purchase amount including tax will be: Total Purchase Amount = Total Purchase Price + Tax Amount= $91.97 + $5.52= $97.49Now, Kito selects express shipping.
As per the given table, express shipping for purchase between $50 up to $100 costs $8.20. Since the total purchase amount ($97.49) is in this range, the express shipping cost will be $8.20.
Now, the total amount billed to Kito's credit card is $105.69. We need to determine if Kito has been billed correctly or not.
Total Amount Billed = Total Purchase Amount + Shipping Cost= $97.49 + $8.20= $105.69Therefore, we can see that Kito has been billed correctly for his purchase. Hence, the correct option is A. Kito has been billed correctly.
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Solve each equation. 4t = 48
Consider this triangle.
use sin
sin(50) = x/6
sin(50) x 6 = x
x = ~4.5963
Jeri has a lawn mowing service and charges $38 for 4 hours of work. At this rate, how much should Jeri charge for a job that will take 9 hours? (UNIT RATES QUESTION NEED HELP ASAP)
Answer:
85.5
Step-by-step explanation:
38 ÷ 4 = 9.5 $/hour
9.5 × 9 = 85.5
Answer:
85.50
Step-by-step explanation:
38/4 = 9.50/hour
9 x 9.50 = 85.50
Anwser these questions
Christian ran 4 1/4 miles on Monday and 2 2/3 miles on Tuesday. On Wednesday, he ran 1 1/3 fewer miles than he ran on Monday. How many miles did he run in all? SHOW YOUR WORK AND EXPLAIN PLEASE I WILL MARK YOU BRAINIEST.
Answer:
9.83 miles
Step-by-step explanation:
Distance covered on Monday = 4.25 miles
Distance covered on Tuesday = 2.66 miles
Distance covered on Wednesday
= 4.25 - 1.33 = 2.92 miles
Total distance covered in Three days = 9.83miles
what is a statement that is assumed to be true without proof
The bricklayer bought 5500 bricks to brick a wall. He calculated that every horizontal layer of bricks will contain 321bricks. How many layers ofbricks will there be in the wall and how many bricks will be left over?
In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
total bricks = 5500
# bricks per horizontal layer = 321
Step 02:
long division:
we must analyze the division to find the solution.
total horizontal layers of bricks = 17
total remaining bricks = 43
The answer is:
total horizontal layers of bricks = 17
total remaining bricks = 43
if the nth term of a number sequence is n^2-1 find the first three terms and the tenth term
PLSS HELP
The nth term of the given number sequence is n^2-1.
The first three terms of the sequence are:
1st term: 1^2-1 = 0
2nd term: 2^2-1 = 3
3rd term: 3^2-1 = 8
The tenth term of the sequence is:
10th term: 10^2-1 = 99
Therefore, the first three terms of the sequence are 0, 3, 8 and the tenth term is 99.
What is the order of the numbers?A set of numbers organized according to certain patterns or rules is known as a number sequence. Sequence types: Sequence of arithmetic operations: Any two successive numbers' difference is constant. Geometric series: Any two consecutive numbers' ratio is constant.
A number sequence example is what?A series of numbers is an ordered list. The three dots signify moving forward in the set pattern. Each digit in the sequence is referred to as a word. The first term in the list is 1, followed by the second by 3, the third by 5, and so on.
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A rectangular prism has a volume of 97.5 cubic inches. The length is 5 inches and the height is 3 inches. What is the width of the rectangular prism?
Answer:
6.5
Step-by-step explanation:
3X5=15
97.5/ 15 = 6.5
in our solar system, 6 of the 8 planets have moons, what percentage of the plants have moons?
Answer:
75%
Step-by-step explanation:
Percentage of planets having moons = 6 /8 *100 = 75%
A photographer charges AED 180 per hour. How much do they charge per minute?
A photographer charges AED 3 per minute.
Here,
A photographer charges AED 180 per hour.
We have to find the charges per minute.
How to change hour in minutes?
The rule for converting hours to minutes is just multiply the number of hours by 60 and you will get the time in minutes.
Now,
A photographer charges AED 180 per hour.
1 hour = 60 minutes
Then, charge per minute = 180/60 = 3
Hence, A photographer charges AED 3 per minute.
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Find the missing side.
Need help please. Need explanation, please.
Answer:
x ≈ 12.22
Step-by-step explanation:
SOH CAH TOA(Tangent = opposite side/adjacent side)
tan (48°) = x/11
=> x = tan (48°) × 11
=> x ≈ 12.22
Write two numbers that multiply to the value on top and add to the value on bottom.
Answer:
9 and 2
Step-by-step explanation:
...............
Answer and Step-by-step explanation:
The answer is 9 and 2.
9 times 2 will equals 18.
9 plus 2 equals 11.
#teamtrees #PAW (Plant And Water)
20 points!! PLEASE ANSWER!!!
Answer:
(3,3) (4, 6) (5, 9)
Step-by-step explanation
A slope of 3 is 3/1, so up 3 over 1. +3 on the y, +1 on the x. If you're going backwards as well, do the opposite.
Hope this made sense
Answer:
graph it dummy you'll now the answer
Hi! Please answer quickly! This is an urgent question! A circle with a radius of 9 cm sits inside a circle with a radius of 11 cm. What is the area of the shaded region? (Round your final answer to nearest hundredth)
Answer:
Area of shaded region = 133.34cm²
Step-by-step explanation:
For circle:
Radius = 9cm
Area of Circle = πr² = 3.14 × 9 × 9 = 254.34cm²
For Square:
Area of Square = 11cm × 11cm = 121cm²
Area of remaining part = 254.34 - 121 = 133.34cm²
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