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Author Question: The results of a recent study regarding smoking and three types of illness are shown in the ... (Read 62 times)

Bobvance

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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

30

90

120

Heart problem

70

210

280

Cancer

100

300

400

Totals

200

600

800


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 and determine the test statistic.
c.The null hypothesis is to be tested at 95% confidence.  Determine the critical value for this test.
d.What do you conclude?

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

studyforce.com

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Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Bobvance

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Reply 2 on: Mar 25, 2023
Thanks for the timely response, appreciate it

juliaf

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

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