Test the claim that the mean GPA of night students is significantly different than the mean GPA of day students at the 0.02 significance level.
GPA-Night GPA-Day 3.15 3.47 3.68 3.49 3.34 3.07 3.07 3.31 3.31 3.28 3.2 3.05 3.07 3.12 2.8 3.5 3.04 3.04 3.13 3.19 3.54 3.26 3.24 3.31 3.02 3.45 3.44 2.9 2.79 2.76 3.18 2.69 2.99 3.46 3.28 3.09 3.16 2.72 3.08 3.14 2.47 3.08 3.03 2.99 3.02 3.11 2.58 2.84 3.36 2.99 3.04 2.99
(1) The null and alternative hypothesis would be:
a.H0:μN≥μD
H1:μN>μD.
b.H0:μN=μD
H1:μN≠μD.
c.H0:pN≥pD
H1:pN d.H0:pN=pD
H1:pN≠pD.
e.H0:μN≤μD
H1:μN<μD
f.H0:pN≤pD
H1:pN>pD.
(2) The test is:_______.
a. right-tailed.
b. two-tailed.
c. left-tailed.
(3) The sample consisted of 70 night students, with a sample mean GPA of 2.12 and a standard deviation of 0.08, and 70 day students, with a sample mean GPA of 2.08 and a standard deviation of 0.02

Answers

Answer 1

Answer:

Step-by-step explanation:

Test the claim that the mean GPA of night students is significantly different than the mean GPA of day students at the 0.02 significance level.

GPA-Night GPA-Day 3.15 3.47 3.68 3.49 3.34 3.07 3.07 3.31 3.31 3.28 3.2 3.05 3.07 3.12 2.8 3.5 3.04 3.04 3.13 3.19 3.54 3.26 3.24 3.31 3.02 3.45 3.44 2.9 2.79 2.76 3.18 2.69 2.99 3.46 3.28 3.09 3.16 2.72 3.08 3.14 2.47 3.08 3.03 2.99 3.02 3.11 2.58 2.84 3.36 2.99 3.04 2.99

(1) The null and alternative hypothesis would be:

a.H0:μN≥μD

H1:μN>μD.

b.H0:μN=μD

H1:μN≠μD.

c.H0:pN≥pD

H1:pN d.H0:pN=pD

H1:pN≠pD.

e.H0:μN≤μD

H1:μN<μD

f.H0:pN≤pD

H1:pN>pD.

(2) The test is:_______.

a. right-tailed.

b. two-tailed.

c. left-tailed.

(3) The sample consisted of 70 night students, with a sample mean GPA of 2.12 and a standard deviation of 0.08, and 70 day students, with a sample mean GPA of 2.08 and a standard deviation of 0.02


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Step-by-step explanation:

50 POINTS QUICK Mary is three times as old as her son . In 12 years Mary will be twice as old as her son. How old is each of them now?

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Answer: Mary is 36 and her son is 12; in 12 years her son will be 24 and she will be 48

Step-by-step explanation:

Answer:

Mary's age = 36

Son's age = 12

Step-by-step explanation:

Let x be age of Mary and y be age of her son.

According to question,

x = 3y...........(1)

And,

x + 12 = 2(y + 12)

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Replacing value of x from (1),

3y + 12 = 2y + 24

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And x = 3 x 12 = 36

listen to cooties by melanie martinez and tell me what u think

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Answer:

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Step-by-step explanation:

Answer: Answer: $0.25

Step-by-step explanation:

Let x be the total money was in her wallet and m be the cost of each petunia,

From the given table , the money left in wallet after purchasing 2 petunia =$6.50

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What is the y-intercept of the line whose equation is:
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Answers

Answer:

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Step-by-step explanation:

Use the intercept method.  Where is y when x = 0?

Which shape has more sides than a quadrilateral? A. regular hexagon B. regular quadrilateral C. regular triangle D. rhombus

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Answer: A regular hexagon.

Step-by-step explanation:

I need to find the surface area of this prism​

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Answer:

264ft³

Step-by-step explanation:

2[(8*6)+(6*12)+(12*8)]

=264

To find surface area you need to find the area of each side on the shape then add it all together. So for the triangle you need to do 1/2 BxH then multiply the number by 2 because you have 2 triangles. Next you can work out the base LxW then to work out the side you do HxL. Your basically just working out the total area of each side that’s possible to touch, every single side.

if a 30 foot rope is divided into 1/4 of a foot pieces how many pieces of rope are there

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Answer:

7.5 is the answer to this

what is the perimeter write your solution

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Answer: 88in

Step-by-step explanation:

As he has doubled the sides, the length would now be 24 and the width would be 20.

So then, to work out the perimeter you have to add up all of the sides.

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Hope this helps :)

need help answering ​

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I think the answer is 11
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20 points and brainlist.

Answers

Answer:

greatest common factor

Answer:

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Step-by-step explanation:

You need the upside down birthday cake method to find prime numbers and gcf

4. The length of a leg of a right triangle is 12 inches
and the hypotenuse is 17 inches long. What is
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Answer:

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Step-by-step explanation:

what is the least common denomimator for 1/3 and 1/2

Answers

Answer:

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Step-by-step explanation:

Answer:

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Step-by-step explanation:

A bowl contains equal-sized gumdrops. If the bowl has 30 green gumdrops and 1 blue gumdrop, plot an X on the number line below which could represent the probability of randomly choosing a green gumdrop from the bowl.

Explain how you determined your answer.

Answers

Answer:

≈ 0.97

Step-by-step explanation:

Given that :

Number of green gum drops = 30

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(Number of blue + number of green gum drops)

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The point x will be drawn slightly to the right of the midpoint between the last two tick marks.

Give the Domain and Range of the following function.
2
2
4
6
O Domain: 2 < X < 6, Range: 4 o Domain: 1 <3 < 6, Range: 1 O Domain: 0 < x < 7, Range: 1 O Domain: 1 < x < 7, Range: 1

Answers

Answer:

Domain: 1 ≤ x ≤ 6, Range: 1 ≤ y ≤ 7

Prove the following identity


sin x(sec x+cscx)= tan x +1

Answers

Answer:

Step-by-step explanation:

________________________________________________________

FACTS TO KNOW BEFORE SOLVING :-

[tex]\sin x = \frac{1}{cosec \: x} \: \: or \: \: cosex \: x = \frac{1}{\sin x}[/tex][tex]\cos x = \frac{1}{\sec x} \: \:or \: \: \sec x = \frac{1}{\cos x}[/tex][tex]\tan x = \frac{\sin x}{\cos x}[/tex]

________________________________________________________

In the question ,

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R.H.S. = [tex]\tan x + 1[/tex]

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[tex]=> \sin x( \frac{1}{\cos x} + \frac{1}{\sin x} )[/tex]

[tex]=> \frac{\sin x}{\cos x} + \frac{\sin x}{\sin x}[/tex]

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∴ L.H.S. = R.H.S. (Proved)


What does "Uninsured Motorist Bodily Injury" typically cover

Answers

Answer:

Uninsured motorist bodily injury, or UMBI, pays for medical bills, pain and suffering, lost wages if you can't work after an accident and funeral expenses after a crash with an at-fault driver who doesn't have car insurance. It may also cover you if you're hit as a pedestrian or while riding your bike.

Step-by-step explanation:

Question 6 of 25
Which expression gives the area of the triangle shown below?
A. ac
O Box
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Answers

Answer: 1/2 cx

Step-by-step explanation: I did the quiz

What are the answers to question 1 and 3 PLZZ HURRRYYY

Answers

Step-by-step explanation:

1. Since ark MN is equal in length with ark PQ, line MN=PQ

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3. Same thing so we equate the two parameters

5x-7=3x+2

2x=9

x=9/2

x=4.5

The estimated regression equation by least squares method minimizes the sum of the Group of answer choices Absolute deviations between actual and predicted y values Differences between actual and predicted y values. Squared differences between actual and predicted y values None of the choices Absolute deviations between actual and predicted x values.

Answers

Answer:

Squared differences between actual and predicted y

Step-by-step explanation:

The least squares regression method used in predictive modeling for linear regression models produces a best fit line which will minimize the square of the mean difference between the actual and projected or predicted values of the dependent, y variable. Hence, the when the sum of the squared value of the difference between the actual and predicted values (residual) are taken, the fit which gives the minimum sum of squared value is the best fit line upon which the estimated regression equation is based.

The true statement is that the estimated regression equation by least squares method minimizes the sum of the (c) Squared differences between actual and predicted y.

In regression, the least square method is used to estimate quantities.

This is done in order to minimize the sum of the squares of the differences between the observed values and the estimated values.

In this case, the observed value and the estimated values represent the actual and predicted y

Hence, the true statement is that the estimated regression equation by least squares method minimizes the sum of the (c)

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hi can someone help me with math?:

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Answers

Answer:

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Step-by-step explanation:

put four in place of x

Answer:

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Using rules, we can simplify expressions with exponents, factorize, or expand them.  [tex]2 x \sqrt{10 x}-2 x \sqrt{5}.$[/tex] Thus option D is correct,

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The area of a triangle varies jointly with the height of the triangle and the length of its base. The area of one triangle is 200 square centimeters when its height
is 25 centimeters and its base length is 16 centimeters. What is the area of a triangle having a height of 20 centimeters and a base length of 15 centimeters?
0600 square centimeters
O 300 square centimeters
O 150 square centimeters
160 square centimeters

Answers

Answer:

150 square centimeters

Step-by-step explanation:

Area of a triangle:

The area of a triangle is the multiplication of 0.5, the base length and the height length.

What is the area of a triangle having a height of 20 centimeters and a base length of 15 centimeters?

[tex]A = 0.5*20*15 = 10*15 = 150[/tex]

The area of the triangle is 150 square centimeters.

which is equivalents to 9/8​

Answers

Answer:

12

Step-by-step explanation:

Answer: 9/8 , 18/16 , 27/24 , 36/32 , 45/40 , 54/48 , 63/56

The perimeter
particular rectangle is
36 centimeters. The longer sides of the rectangle are
cach 2 centimeters longer than each of the shorter sides
of the rectangle. What is the length, in centimeters, of
one of the longer sides of this rectangle"?

Answers

Answer:

Long side of the rectangle: 11cm

Shorter side of the rectangle: 7cm

Step-by-step explanation:

36cm divided by 4 = 9

9-2=7

take that two and add it to the other two nines

9+2=11

The required length of the longer sides of rectangle is 10cm.

The perimeter of the rectangle is 36 centimeters,
length = 2+ width

What is rectangle?

rectangle is four sided polygon whose opposites sides are equal and has angle of 90° between its sides.

Perimeter = 2 length x 2 width
36 = 2(2+width) x 2width
36= 4 (1+width)
width = 8
length= 2+width
length = 2+ 8
length = 10 centimeters

Thus, The required length of the longer sides of rectangle is 10cm.

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Answer:

8100700

Step-by-step explanation:

I used a calculator

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Answer:

8100700

hop i helped look at my drawing

Step-by-step explanation:

What is the total number of digits required in numbering the pages of a book which has 1210 pages?

Answers

Answer:

3693 digits

Step-by-step explanation:

Answer:

3733

Step-by-step explanation:

9x1=9

90x2=180

900x3=2700

211x4=844

9+180+2700+844=3733

What the distance between (1,-9) and (6,-6)

Answers

Answer:

8 units for 1, -9

6 units for 6, -6

Step-by-step explanation:

a cylinder had a diameter of 17 cm and a height of 11 cm. ehat is the volume of the cylinder​

Answers

Answer:

2496.78

Step-by-step explanation:

One rectangular solid with a square base has twice the height of another rectangular solid with a square base with the same side length. Which statements about the two rectangular solids are true?
Check all that apply.

The bases are congruent.

The solids are similar.

The ratio of the volumes of the first solid to the second solid is 8:1.

The volume of the first solid is twice as much as the volume of the second solid.

If the dimensions of the second solid are x by x by h, the first solid has 4xh more surface area than the second solid.

Answers

Answer:

First rectangular solid and second Rectangular solid

1. Bases are in the form of square having same dimensions

2. Height of first rectangular solid=2 ×Height of second rectangular solid

The true statements are

A) The bases are congruent.→The meaning of term congruent is that , the two bases are in the shape of square having same dimensions.

(B) No, The solids are not similar.as ratio of side lengths in not same in each case , because the ratio of heights of two solid is equal to .

(D) Volume of first solid = x *x*2 H=2 x²H

Volume of second solid = x*x*H=x²H

Ratio of volumes =2:1

So, option (D) is true.

(E) Surface area of first solid =2[x*x+x*2 H+2 H*x]

=2[x²+4 H*x]=2 *x*[x+4* H]

Surface area of second solid = 2[x*x+x* H+ H*x]=2[x²+2 H*x]=2* x*[x+ 2*H]

Option A, D, E are correct about two solids.

Step-by-step explanation:

Answer:

a, d, e

Step-by-step explanation:

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