MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
A survey asks questions about one's happiness and health. One would think that health plays a role in one's happiness. Use the data in the accompanying table to determine whether healthier people tend to also be happier. Treat level of health as the explanatory variable.
|
Poor
|
Fair
|
Good
|
Excellent
|
|
---|---|---|---|---|---|
Not too happy
|
685
|
1,386
|
1,629
|
732
|
|
Pretty happy
|
940
|
3,817
|
9,642
|
5,195
|
|
Very happy
|
350
|
1,372
|
4,520
|
5,085
|
Create a conditional distribution for the data.
|
Level of Health
|
|||
---|---|---|---|---|
Level of Happiness
|
Poor
|
Fair
|
Good
|
Excellent
|
Not too happy
|
||||
Pretty happy
|
||||
Very happy
|
||||
Total
|
Round to 3 decimal places as needed.
Use the conditional distribution to determine if healthier people tend to be happier. Choose the correct answer below.
A.
Yes; the percent that are not happy decreases when health increases.
No; the percent that are very happy decreases when health increases.
No; the percent that are not happy increases when health increases.
Yes; the percent that are pretty happy stays constant when health increases.
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