Hypothesis Testing (Z-Testing)
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A doctor suspected that smokers between 40 and 50 with lung disease had been smoking on average more than 20 years. A sample of 10 smokers gave the following results:
22
2
19
25
24
26
23
2
21
22
Using a 1% significance level is there sufficient evidence to justify the doctors belief?
Is there sufficient evidence to Justify it at the a = .1 level?
Normality assumed
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Solution Summary
A z-test is performed.
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Hypothesis Testing (Z-Testing)
2. A doctor suspected that smokers between 40 and 50 with lung disease had been smoking on average more than 20 years. A sample of 10 smokers gave the following results:
22
2
19
25
24
26
23
2
21
22
Using a 1% ...
Purchase this Solution
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