The proportion of deaths due to lung cancer in males ages 15-64 in England and W
ID: 3270328 • Letter: T
Question
The proportion of deaths due to lung cancer in males ages 15-64 in England and Wales during the period 1970-1972 was 12%. Suppose that of 20 deaths that occur among male workers in this age group who have worked for at least 1 year in a chemical plant, 5 are due to lung cancer. We wish to determine whether there is a difference between the proportion of deaths from lung cancer in this plant and the proportion in the general population.
Question 1
State the hypothesis to use in answering this question.
Question 2
Is a one-sided or two-sided test appropriate here?
Explanation / Answer
1) population proportion = 0.12
The following null and alternative hypotheses need to be tested:
Ho: p = 0.12
Ha: p 0.12
2) Two tailed test
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