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Author Question: The results of a recent study regarding smoking and three types of illness are shown in the ... (Read 73 times)

blinding37

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on: Mar 25, 2023

The results of a recent study regarding smoking and three types of illness are shown in the following table.

 

Illness

Non-Smokers

Smokers

Totals

Emphysema

20

60

80

Heart problem

70

80

150

Cancer

30

40

70

Totals

120

180

300


We are interested in determining whether or not illness is independent of smoking.

 

a.State the null and alternative hypotheses to be tested.
b.Show the contingency table of the expected frequencies.
c.Compute the test statistic.
d.The null hypothesis is to be tested at 95% confidence. Determine the critical value for this test. What do you conclude?
e.Determine the p-value and perform the test.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by blinding37 on Mar 25, 2023

DevinBrifm

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Reply #1 on: Mar 25, 2023
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blinding37

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Reply 2 on: Mar 25, 2023
Excellent

Joy Chen

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Reply 3 on: Yesterday
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