A bank compares two proposals to increase the amount that its credit card customers charge on their cards. (The bank earns a percentage of the amount charged, paid by the stores that accept the card). Proposal A offers to eliminate the annual fee for customers who charge $2,400 or more during the year. Proposal B offers a small percent of the total amount charged as a cash rebate at the end of the year. The bank offers each proposal to an SRS of 150 of its existing credit card customers. At the end of the year, the total amount charged by each customer is recorded. Here are the summary statistics:
Group n x s
A 150 $1,987 $392
B 150 $2,056 $413
A) Do the data show a significant difference between the mean amounts charged by customers offered the two plans?
B) The distributions of amounts charged are skewed to the right, but outliers are prevented by the limits that the bank imposes on credit balances. Do you think that skewness threatens the validity of the test? Explain.

Answer:

right and complementary  its not Acute

Step-by-step explanation:

Answer:

y = 3/5x + -9

or y = 3/5x - 9

Step-by-step explanation:

Since you are already given the slope for this equation all you have to do is plug in the ordered pair in this equation: y = mx+b

Here is what this equation stands for:

y = the y in the order pair you are given, in this case it would be -6

m = This is the slope, sometimes you may not be given the slope so you would have to find it, but in this case, you are given it, the slope is 3/5

x = the x in the ordered pair you are given, in this case it would be 5

b = This is the y-intercept, you will mostly be solving for this most of the time

(5,-6)

(x, y)

y = mx+b (Use this Formula)

-6 = 3/5(5) +b (The numbers have been substituted within the formula)

-6 = 3+b (simplify the equation by multiplying the slope by the x)

-6-3 = b ( once simplified the left side of the equation, go to the right side, but remember when you do that you have to change the sign because you are eliminating 3 on the left side completely, "what you do on one side, do it to the other side")

-9 = b (solve)

y = 3/5x + -9 (plug in the slope and B(y-intercept) within the formula - y = mx+b, make sure that you are not plugging in x and y for this step)

I Hope This Helped You Understand this Problem Better/More!!! Stay Safe and Healthy!

Answer:

If one earthquake is 31 times as intense as another, how much larger is its magnitude on the Richter scale? The larger earthquake was 1.49 larger on the Richter scale.

Step-by-step explanation:

i hope it help

Answer:

yes .it is totally correct

Answer:

The most appropriate inference procedure for the investigation is;

a. A linear regression t-interval for the slope

Step-by-step explanation:

Given that the slope of an horizontal line is zero, we have that there is no change in the y (dependent) variable when there is a change in the x-variable, therefore, it is important to find the true relationship between the two variables, 'x', and 'y'

The confidence interval of the slope is calculated and analyzed to determine if it excludes or includes, 0, such that, if the confidence interval exclude 0, then, it is unlikely that the slope is 0, therefore, there the relationship between the variables, 'x', and 'y' is significant

Therefore, a linear regression t-interval for the slope is most appropriate.

Answer:

99.96

but trust me I'm bad with big numbers but I think this ones right.

Answer:

99.96

Step-by-step explanation:

Answer:d

Step-by-step explanation:

I’m smart trust me

Answer:

><><><><><

Step-by-step explanation:

...

hi! I hope you are okay, what do you need help with????? Pls mark brainliest to make me happy!!!!

Answer:

49 units

Step-by-step explanation:

The units on the other 3 sides (this is excluding the slanted portion ofc.)

would add up to 36.

Now you only left with doing the slanted portion of the shape. We must use pythagorean theorem to solve for the slanted portion. The longer leg, 12 units long. Just count from the point (18,4) and then stop at (18,16) it stops on the same line as the point (13,16)

Leg B=12

Leg A=5

Leg C=?

[tex]a^2+b^2=c^2[/tex]

25+144=196

Then square root  169. You will get 13

36+13=49

Answer:

C) 46

Step-by-step explanation:

20 + 6 + 8 + 12 = 46

Answer:

Step-by-step explanation:

Perimeter (P) of the quarter circle is the curve + both sides.

Perimeter of the curve

Perimeter of the sides

2 sides = 2r

Step-by-step explanation:

The area of the rectangle will be given as Area = 2W² + W. Then the correct option is A.

It is a polygon with four sides. The total interior angle is 360 degrees. A rectangle's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.

The length of a rectangle is 1 more than twice the width.

The area of the rectangle is given by the formula A = L x W.

Then the area of the rectangle will be

The relation between the length and width is given below.

L = 2W + 1

Then the area will be

Area = L x W

Area = (2W + 1)W

Area = 2W² + W

More about the rectangle link is given below.

https://brainly.com/question/10046743

#SPJ1

Answer:

o because the square is not of 4

Answer:

not stealing points but do not go on that website. totally fraud smh

Answer:

You can be in the snow play ski park 5hours

Step-by-step explanation:

First 60$ - 35$=25$

1h=5$

2h=10$

3h=15$

4h=20$

5h=25$

So you can pay 35$ for the snow play ski park and then you can be there 5hours.So 35$ for the entry+25$ for the 5 hours=60$

PS:Can I be a brainliest pls. And have a nice day and sry for my english i m not so good but i wanted to help you.cya

Answer:

18

Step-by-step explanation:

Answer:

1,687,500,000,000

Step-by-step explanation:

1) 270,000,000 x 6250

Answer: The sample size would be needed = 385

Step-by-step explanation:

Let p be the prior population proportion.

Margin of error = E

When not estimate of p is given , the formula to calculate the minimum sample size n = [tex]0.25(\dfrac{z^*}{E})^2[/tex] , where z* = critical value for given confidence interval.

Here z* for 95% confidence level is 1.96.

E=5%=0.05

Then [tex]n=0.25(\dfrac{1.96}{0.05})^2\approx385[/tex]

Hence, the sample size would be needed = 385

Step-by-step explanation:

Marbles altogether = 360

Marbles Samir Lost = 28

360 - 28 = 332

Marbles Christian bought 18

332 + 18 = 350

Marbles both had in the end = 350 ÷ 2 = 175

Marbles Samir have at the beginning = 175 + 28 = 203

Answer = 203

Answer:

3/4 or 3-4

.......................

Step-by-step explanation:

Hypothesis - Statement following the word 'Íf'

Conclusion - Statement after the word 'Then'

26. If you are a basketball player, then you are at least 5’9” tall.

Hypothesis - If you are a basketball player

Conclusion - then you are at least 5’9” tall.

27. If three points lie on a line, then they are collinear.

Hypothesis - If three points lie on a line

Conclusion - then they are collinear.

28. If you are 13 years old, then you are a teenager.

Hypothesis - If you are 13 years old

Conclusion - then you are a teenager.

29. 9x=36 implies x=4.

Hypothesis -  9x=36

Conclusion - x=4

30. A =+~ B only if mA =+~mB

Hypothesis - if mA =+~mB

Conclusion - A =+~ B

Answer:

Step-by-step explanation:

? = 16

Since the number of White stars is 2/3 of the number of Black Stars, you would do 24 x 2/3 = 48/3 = 16

OR

24 x 2/3 = 8 x 2 = 16

Hope that helps!

Answer:

16 white stars

Step-by-step explanation:

3x8=24

2x8=16

Answer:

B: 6

Step-by-step explanation:

Find the mean:

5+8+4+7= 24

24/4=6

Answer:

6

Step-by-step explanation:

The wide of the path is 28 + 2x

The area is the sum of the areas of all its faces.

The area of a solid object is a measure of the total area that the surface of the object covers.

area of the pool = 8 * 28 meteres²

total area of pool and path = 800 meteres ²

The width of the path is = 800 - 224

                                    = 576 meters ²

Learn more about the area here:-https://brainly.com/question/25292087

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Answer:

40.5

Step-by-step explanation:

Since QS is an angle bisector then PQs and SQR are similar. Using the similarity theorem;

PQ/PS = QR/SR

45/20 = x/18

Cross multiply

20x = 45 * 18

20x = 810

x = 810/20

x = 40.5

Hence the value of x is 40.5

Answer:

42-43 Euro size

Step-by-step explanation:

it is a 9.5 in American so that is the size converted to Euro (42-43).

I don't know if that helped I cant say for sure it is correct.

Answer:

a) [tex]y(t) = 30 + 25t[/tex]

b) The pollution level at 4 o'clock in the afternoon​ is of 280 parts per million.

Step-by-step explanation:

The pollution level in the center of a city at 6 am is 30 parts per million and it grows in linear fashion by 25 parts per million every hour.

This means that the pollution in t hours after 6 am is given by:

[tex]y(t) = 30 + 25t[/tex], which is the answer to question a.

b. The pollution level at 4 o'clock in the afternoon​

4 in the afternoon is 10 hours after 6 am, so this is y(10).

[tex]y(10) = 30 + 25*10 = 30 + 250 = 280[/tex]

The pollution level at 4 o'clock in the afternoon​ is of 280 parts per million.