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mina [271]
2 years ago
7

A marketing company wants to know if people who like brand X soda also like brand Y potato chips. Which procedure is the most ap

propriate to answer the question?
A. Randomly choose two groups. Ask one group if they like brand X soda and ask the other group if they like brand Y potato chips.

B. Randomly choose a group. Ask them if they like both brand X soda AND brand Y potato chips.

C. Ask a random group to choose two things they like from a list of 10 food items, where two of the choices are brand X soda and brand Y potato chips.

D. Ask a random group two questions: Do you like brand X soda? Do you like brand Y potato chips?
Mathematics
1 answer:
k0ka [10]2 years ago
4 0

Answer:

D. Ask a random group two questions: Do you like brand X soda? Do you like brand Y potato chips?

Step-by-step explanation:

The correct answer is D.

The group has to be chosen randomly. However, in option B, the person could simple answer no if asked if the liked both soda and potato chips and they only liked one.

In D, the person would have to answer for both, and it would be possible to estabilish dependence or independence, for example.

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Which of the following points is not coplanar with polnis C, D and E?
Leokris [45]

Answer: Point R

===================================================

Explanation:

The term "coplanar" means "points that are in the same plane".

Points A, S and U are all in the base plane. Think of this as the floor of the pyramid, so to speak. These three points are with C, D, and E, which are also on the base plane or floor plane. So we can say that all of these points are coplanar.

In contrast, point R is not on the floor plane. It's higher up. So that's why R is not coplanar with points C,D,E.

7 0
2 years ago
A survey reported in Time magazine included the question ‘‘Do you favor a federal law requiring a 15 day waiting period to purch
galben [10]

Answer:

Step-by-step explanation:

Confidence interval for the difference in the two proportions is written as

Difference in sample proportions ± margin of error

Sample proportion, p= x/n

Where x = number of success

n = number of samples

For the men,

x = 318

n1 = 520

p1 = 318/520 = 0.61

For the women

x = 379

n2 = 460

p2 = 379/460 = 0.82

Margin of error = z√[p1(1 - p1)/n1 + p2(1 - p2)/n2]

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.95 = 0.05

α/2 = 0.05/2 = 0.025

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.025 = 0.975

The z score corresponding to the area on the z table is 1.96. Thus, confidence level of 95% is 1.96

Margin of error = 1.96 × √[0.61(1 - 0.61)/520 + 0.82(1 - 0.82)/460]

= 1.96 × √0.0004575 + 0.00032086957)

= 0.055

Confidence interval = 0.61 - 0.82 ± 0.055

= - 0.21 ± 0.055

3 0
2 years ago
What can i do to be brainiest
grigory [225]

You can answer some questions that say (PLEASE ANSWER I WILL GIVE YOU BRAINIEST!!!!!!!) it usually happens if you answer it first ;D

7 0
3 years ago
Read 2 more answers
What is the slope of the line represented by the equation y = –x + ? – –
Svetlanka [38]

For this case we have by definition, that the equation of a line in the slope-intersection form is given by:

y = mx + b

Where:

m: It is the slope of the line

b: It is the cut point with the "y" axis

We have, according to the data provided, that the line is of the form:

y = -x + b

That means that the slope is -1.

ANswer:

m = -1

8 0
3 years ago
Read 2 more answers
A segment has one endpoint at (-4,1) and it's midpoint at (3,0). What is the x-coordinate of the other endpoint?
nikklg [1K]

Answer:

(10; -1)

the x-coordinate of the other endpoint is (x;y)

because the segment has midpoint at (3;0)

=> x - 4 = 3.2 = 6

y + 1 = 0.2 = 0

<=> x = 10

y = -1

=> the other endpoint is (10; -1)

5 0
2 years ago
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