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Author Question: A sample of 150 individuals (males and females) was surveyed, and the individuals were asked to ... (Read 70 times)

redpassion

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on: Mar 25, 2023

Question 1

A poll was taken this year asking college students if they considered themselves overweight.   A similar poll was taken five years ago. Results are summarized below.  Has the proportion increased significantly?  Let α = 0.05.

 

Sample Size

Number Considered Themselves Overweight

Present Sample

300

150

Previous sample

275

121



Question 2

A sample of 150 individuals (males and females) was surveyed, and the individuals were asked to indicate their yearly incomes. Their incomes were categorized as follows.

Category 1$20,000up to$40,000
Category 2$40,000up to$60,000
Category 3$60,000up to$80,000


The results of the survey are shown below.

Income Category

Male

Female

Category 1

10

30

Category 2

35

15

Category 3

15

45


We want to determine if yearly income is independent of gender.

a.Compute the test statistic.
b.Using the p-value approach, test to determine if yearly income is independent of gender.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by redpassion on Mar 25, 2023

dude123

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Reply #1 on: Mar 25, 2023
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redpassion

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Reply 2 on: Mar 25, 2023
Wow, this really help

jamesnevil303

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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