Can someone please help me with all of these? i really need help!​

For the entire independent-measures experiment 24 individuals are participated.

Different participants are utilized in each condition of the independent variable in an experimental design known as an independent measures design, or between-groups. This indicates that a different group of participants is present for each condition of the experiment. A research strategy known as an independent measures design uses numerous experimental groups with subjects only being assigned to one group. Throughout the experiment, each participant is solely exposed to one independent variable condition. A drug trial for a novel medicine would serve as an example. This has the benefit of preventing order effects, which occur when participants behave differently as a result of the order in which conditions are done, often as a result of factors like boredom or exhaustion.

We are given the value  t(22) = 5.30, p < .01

So here degree of freedom (df) is 22 and it is independent so there is two samples,

so df= n₁+n₂-2

⇒ 22 =  n₁+n₂-2

⇒ n₁+n₂ = 24.

Thus for the entire experiment 24 individuals are participated.

To learn more about independent-measures experiment, click here:

https://brainly.com/question/17699654

#SPJ4

Answer: Total Hours

Regular Rate = $11.25 / hour

Overtime Rate = $16.88 / hour

Double Time Rate = $22.50 / hour

Step-by-step explanation:

Answer:

532

Step-by-step explanation:

The score that represents the top 20% = A score = 80%

Z score for 80% percentile = 0.842

We solve using the z score formula

z = (x-μ)/σ, where

x is the raw score = ??

μ is the population mean = 490

and σ is the population standard deviation = 50

Hence:

0.842 = x - 490/50

Cross Multiply

0.842 × 50 = x - 490

x = 0.842 × 50 + 490

x = 42.1 + 490

x = 532.1

Approximately = 532

Therefore, the test score = 532

Answer:

532

Step-by-step explanation:

edg 2020-2021

Answer:

15 miles

Step-by-step explanation:

Well it's 34= 4+ 2x

You remove 4 from 34 since that's the flat fee. Then you just divide 30 /2 which gets you to 15

Answer:

Question #1.

Part A)  C

Part B) "x" represents the cost of each of the equally priced items that mariam buys.

Question #2.

2x+4=34

x = 15

Step-by-step explanation:

$2 represents the amount per mile and the $4 represents the flat fee. "x" represents the number miles that matthew traveled on his trip. Since he spent a total of $34 on his trip and $4 on a flat one time fee then all you need to find is the number of miles he traveled since they give you fee per mile, which is $2.

So, solve:

2x+4=34, minus 4 from both sides

2x=30 then divide by 2 from both sides

x=15

Answer: The correct answer is Yes, the relationship between x and y is a non-linear function.

I hope this helps.

Step-by-step explanation:

Given the table

Edge Length, x            Surface Area, y

1                                             6

2                                            24

3                                            54

4                                             96

The table values clearly represent a function, because each input value has one and only one output value. i.e. there is no repetition of x values.

Also from the table values and the graph, it is clear that the function is not a linear function, because the graph is not a straight line. Also, In a cubic function, the highest power over the x variable(s) is 3. So, it is not a linear function.

Hence, we conclude that Yes, the relationship between x and y is a non-linear function.

Therefore, the 'last option' is correct.

As range doesn't reveal anything about the distributive property of the data, it is the least helpful measure of variability because it is the most generic.

1. Sort the data either ascendingly or descendingly.

2. Determine how many items are in the data set.

3. The median is the number in the middle of the list if the number of items is odd.

4. The median is the average of the two middle numbers in the list if the number of items is even.

To figure out the range:

1. Sort the data either ascendingly or descendingly.

2. To determine the range, deduct the smallest number from the largest.

As range does not reveal anything about the distribution of the data, it is the least useful measure of variability because it is the most generic. Range does not indicate where the values fall within the range; rather, it measures the difference between the highest and lowest values in a data collection.

Learn more about distributive property here

https://brainly.com/question/5637942

#SPJ4

Answer:

x = 12

Step-by-step explanation:

18:24 (comparing the same sides for the similar shapes; 18 and 24) when simplified down is equal to 3:4.

Using this 3:4 scale factor we can find the missing side x.

Solving for x :

\(\frac{3}{4}\) × 16 = 12

x = 12

OR: Set up a proportion:

\(\frac{24}{16}\) × \(\frac{18}{x}\)

cross-multiply

16 × 18 = 288

24 × x = 24x

288 = 24x

x = 12

The 90 percent confidence interval for the population mean is (15.03, 16.57) tons.

To calculate the confidence interval, we can use the formula:

Confidence interval = sample mean ± (critical value) * (standard deviation / √(sample size))

Since we want a 90 percent confidence interval, we need to find the critical value associated with a 90 percent confidence level. Looking up the critical value in a standard normal distribution table, we find that it is approximately 1.645.

Plugging in the values into the formula, we have:

Confidence interval = 15.8 ± (1.645) * (3.85 / √(49))

= 15.8 ± (1.645) * (3.85 / 7)

≈ 15.8 ± 0.77

Therefore, the 90 percent confidence interval for the population mean is (15.03, 16.57) tons.

Know more about population mean here:

https://brainly.com/question/33439013

#SPJ11

The time it take riders to pass over the hill and reach ground level is 111.19 seconds .

Given :

the roller coaster's height expressed by the equation below;

h = -0.067t^2 + 7t + 50

where

t is the time in seconds

The driver will hit the ground at the point where h = 0

Substitute

-0.067t^2 + 7t + 50 = 0

Multiply through  by -1

0.067t^2 - 7t +-50 = 0

Factorize :

On factorizing, the positive value of "t" is 111.19 seconds

Hence the time it take riders to pass over the hill and reach ground level is 111.19 seconds

Learn more about the equation here:

https://brainly.com/question/10413253

#SPJ4

Spherical harmonics are an integral part of quantum mechanics. They describe the shape of the orbitals, which electrons occupy in atoms. Moreover, the spherical harmonics provide the angular distribution of a wave in spherical coordinates. In 3D, the spherical harmonics can be written as:

Ylm(θ, φ) = √(2l + 1)/(4π) * √[(l - m)!/(l + m)!] * Plm(cosθ) * e^(imφ)

Here, l and m are known as the angular quantum numbers. They define the shape and orientation of the orbital. Plm(cosθ) represents the associated Legendre polynomial, and e^(imφ) is the exponential function. The spherical harmonics have various forms, including:

Y1,1 = -Y1,-1 = 1/2 √(3/2π) sinθe^(iφ)

Y1,0 = 1/2 √(3/π)cosθ

Y2,2 = 1/4 √(15/2π)sin²θe^(2iφ)

Y2,1 = -Y2,-1 = 1/2 √(15/2π)sinθcosφ

Y2,0 = 1/4 √(5/π)(3cos²θ-1)

Y0,0 = 1/√(4π)

The spherical harmonics have various applications in physics, including quantum mechanics, electrodynamics, and acoustics. They play a crucial role in understanding the symmetry of various systems. Hence, the spherical harmonics are an essential mathematical tool in modern physics. Thus, this is how one can show another form for spherical harmonics.

To know more about  Spherical harmonics visit

https://brainly.com/question/23067012

#SPJ11

Therefore (b). A chi-square statistic is always positive as it is the sum of squared deviations from expected values.

However, it can contain fractions or decimal values as it is based on continuous data. The chi-square distribution is skewed to the right and its shape depends on the degrees of freedom. The possible values for a chi-square statistic depend on the sample size and the number of categories in the data. In general, larger sample sizes and more categories will result in larger chi-square values. It is important to note that a chi-square statistic cannot be negative as it is the sum of squared deviations. Therefore, options (a) and (c) are incorrect. In conclusion, the correct answer is (b) and it is important to understand the properties and interpretation of chi-square statistics in statistical analysis.

To know more about square visit:

https://brainly.com/question/30556035

#SPJ11

Step-by-step explanation:

the general equation of a parabola is

y = a(x – h)² + k.

(h, k) is the vertex of the parabola.

comparing it to

y = 3(x + 4)² - 2

we see that (h, k) = (-4, -2).

the student made a sign mistake. it is "- h" in the squared factor. so, "+4" indicates "-4" as "h".

but the student simply used "+4".

If d represents how many dozens of eggs were ordered, then the expression that represents the number of eggs that were ordered is 12d. Therefore, if we order d dozen of eggs, we will have 12 * d eggs.

For such more question on dozens

https://brainly.com/question/1344677

#SPJ8

Answer:

−4; the amount of bait decreases by 4 pieces each hour

Step-by-step explanation

Answer:

−4; the amount of bait decreases by 4 pieces each hour

Step-by-step explanation:

I did the exam and got it right .

hope this helps you! have a Great day!

The equation of the relation is y = 3/2x.

   x    |   y    

   0       0

   2       3

   4       6

To write the equation for the proportional relationship between two variables, x and y, find the unit rate, k, which is k = y/x.

Substitute the value of k into y = kx to write the equation of the relationship.

Using a point on the line, (2, 3):

k = y/x = 3/2

Substitute k = 3/2 into y = kx:

y = 3/2x

Using the equation, substitute each of the values of x in the table to get the corresponding value of y:

For 0:

y = 3/2(0)

y = o

For 2:

y = 3/2(2)

y = 3

For 4:

y = 3/2(4)

y = 6

The table is:

   x    |   y    

   0       0

   2       3

   4       6

Learn more about equation of relationship on:

https://brainly.com/question/6869319

#SPJ1

The probability of this happening unlucky is \(\frac{1}{1000}\).

Given that

You are a member of a population of 10,000 people.

You happen to be chosen for a simple random sample of size 1,000 this year.

Then you are chosen for another simple random sample of size 100 (drawn independently of the first sample) next year.

P(getting in sample 1st year) = \(\frac{(\frac{9999}{99})(\frac{1}{1} ) }{(\frac{10000}{1000} )}\)

= \(\frac{1000}{10000} = \frac{1}{10}\)

P(getting in sample 2nd year) = \(\frac{(\frac{9999}{99}) }{(\frac{10000}{1000} )}\)

= \(\frac{100}{10000} = \frac{1}{100}\)

P(getting in both samples) = \(\frac{1}{10} * \frac{1}{100} = \frac{1}{1000}\)

Hence the answer is The probability of this happening unlucky is \(\frac{1}{1000}\).

To learn more about probability click here https://brainly.com/question/24756209

#SPJ4

The symbol for proportionality is "∝". It is read as "is proportional to" or "varies in proportion to".

Proportionality is a mathematical concept that describes the relationship between two quantities. When two quantities are proportional, it means that they have a constant ratio. For example, the distance traveled by a car is proportional to the time it takes to travel that distance. This means that if the time taken to travel doubles, then the distance traveled also doubles.

In mathematics, we use the symbol "∝" to represent proportionality. This symbol is read as "is proportional to" or "varies in proportion to". So, if we say that A ∝ B, it means that A is proportional to B. This implies that if B increases or decreases, then A also increases or decreases, but the ratio of A to B remains constant.

The concept of proportionality is used in various mathematical fields, such as algebra, geometry, and physics. It is a powerful tool for solving problems that involve relationships between quantities, and it is widely used in real-world applications, such as in engineering, economics, and statistics.

To learn more about proportionality please click on below link        

https://brainly.com/question/29126727

#SPJ4

Check the picture below.

so we only want the area in pink.

\(\stackrel{\textit{left and right}}{2(4)(11)}~~ + ~~\stackrel{\textit{front and back}}{2(4)(11)}\implies \text{\LARGE 176}~cm^2\)

Answer:

39cm²

Step-by-step explanation:

Surface area of square-based pyramid = length X width + 4(area of triangle)

= 3 X 3 + 4 (1.5 X 5)

= 9 + 4 (7.5)

= 9 + 30

= 39cm²

Answer:

answer is C

Step-by-step explanation:

lets be honest, your not here for an explanation.

yw btw

Answer:

let the number of snacks bought be x

f(x) = 7 +2.5(x)

=> f(x) is the amount you spend in total

Thus, 1) The second derivative, with respect to x, of the wave function: d2dx2ψn(x) = -Cn^2(pi/L)^2sin(n*pi*x/L).

2) U(x)ψn(x) = 0

3) Eψn(x) = -Cn^2(pi/L)^2Esin(n*pi*x/L)

1) The second derivative, with respect to x, of the wave function ψn(x) in the interval 0≤x≤L can be found by applying the second derivative operator to the wave function:

d2dx2ψn(x) = -Cn^2(pi/L)^2sin(n*pi*x/L)

where n is the quantum number and C is the normalization constant.

2) U(x)ψn(x) is the product of the potential energy function U(x) and the wave function ψn(x) in the interval 0≤x≤L. If the potential energy function is zero in this interval, then U(x)ψn(x) is also zero.

Therefore, U(x)ψn(x) = 0.

3) Eψn(x) is the product of the energy E and the wave function ψn(x) in the interval 0≤x≤L. Substituting the wave function expression from part 1 into this product, we get:

Eψn(x) = -Cn^2(pi/L)^2Esin(n*pi*x/L)
where E is the energy of the particle.

Know more about the wave function

https://brainly.com/question/29751134

#SPJ11

Answer: Nonresponse, voluntary, and convenience.

Step-by-step explanation:

For the first question, it should be noted that everyone cannot respond as only the people who have strong opinions will respond. Therefore, it's a nonresponse error.

For the second question, the people will have to volunteer. Therefore, it's a voluntary bias while the third one is a convenience sample as it's an easily available sample.

Read related link on:

brainly.com/question/19452571

The coordinates for the local extrema are (0, 0) and (2/3, 4e^(-2)).

To find the coordinates for any local extrema of the function h(x) = 3x^2e^(-3x), we need to find the critical points by taking the derivative of h(x) and setting it equal to zero.

Step 1: Find the derivative of h(x)

h'(x) = d/dx (3x^2e^(-3x))

To differentiate the function, we can use the product rule and the chain rule:

h'(x) = 6xe^(-3x) + 3x^2(-3e^(-3x))

= 6xe^(-3x) - 9x^2e^(-3x)

= e^(-3x)(6x - 9x^2)

Step 2: Set h'(x) = 0 and solve for x

e^(-3x)(6x - 9x^2) = 0

We have two factors: e^(-3x) = 0 and 6x - 9x^2 = 0.

For e^(-3x) = 0, there are no real solutions since the exponential function is always positive.

For 6x - 9x^2 = 0, we can factor out x:

x(6 - 9x) = 0

Setting each factor equal to zero:

x = 0 and 6 - 9x = 0

Solving the second equation:

6 - 9x = 0

9x = 6

x = 6/9

x = 2/3

So the critical points are x = 0 and x = 2/3.

Step 3: Find the corresponding y-values

To find the corresponding y-values, we substitute the critical points into the original function h(x).

For x = 0:

h(0) = 3(0)^2e^(-3(0))

= 0

For x = 2/3:

h(2/3) = 3(2/3)^2e^(-3(2/3))

= 4e^(-2)

Know more about differentiate here:

https://brainly.com/question/13958985

#SPJ11

I believe it might be 1.11

Answer:

35.36

Step-by-step explanation:

For Class A

Class A has 11 pupils

The mean score for Class A is 32.

The total score of the students =

Mean score × Number of pupils

= 32 × 11

= 352

For Class B

Class B has 14 pupils. The mean score for class B is 38.

The total score of the students =

Mean score × Number of pupils

= 38 × 14

= 532

Total number of pupils for both classes = (11 + 14)pupils

= 25 pupils

Total score for both class = 532 + 352

= 884

The mean score(rounded to 2DP) in the maths test across both classes is calculated as:

Total score of both classes÷ Total number of pupils

884 ÷ 25

35.36

Answer:

c

Step-by-step explanation:

, the correct answers are:

Orientation (North Arrow)

Scale

Legend

Neatline Border

The four primary cartographic elements are:

Orientation (North Arrow): This element indicates the orientation or direction of the map, typically pointing towards the north. It helps users understand the map's alignment and relation to the real world.

Scale: The scale provides a ratio or representative fraction that shows the relationship between distances on the map and corresponding distances on the Earth's surface. It helps users determine the actual size or distance of features on the map.

Legend: The legend, also known as a key, explains the symbols, colors, and other graphic elements used on the map. It helps users understand the meaning or representation of various features or data.

Neatline Border: The neatline border defines the outer boundary of the map. It is a solid line that encloses the map area and separates it from the surrounding space or background.

learn more about ratio here:

https://brainly.com/question/28345307

#SPJ11

B. 31.4 (pi) units

C. 31.4 units

A. 10 (pi)

Explanation:

Well since the equation to find circumference is C = 2(pi)r

And 10(pi) is exactly 2(pi)r, it’s not the answer.

And if we use 3.14 as an estimate for (pi), then 31.4 is also true for the circumference, because 10•3.14=31.4.

Also 10(pi) is more acurate then 31.4 because (pi) isnt exactly 3.14 its more like 3.1415926535...

Hope this Helps!