Question
A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding
A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period.
Single Policyholders | Married Policyholders |
---|---|
n1 = 400 | n2 = 900 |
number making claims = 76 | number making claims = 90 |
(a)Use = 0.05. Test to determine whether the claim rates differ between single and married male policyholders.State the null and alternative hypotheses. (Let p1 = claim rate for single male policyholders and p2 = claim rate for married male policy holders.)
H0: p1 p2 0
Ha: p1 p2 > 0
H0: p1 p2 > 0
Ha: p1 p2 0
H0: p1 p2 0
Ha: p1 p2 < 0
H0: p1 p2 = 0
Ha: p1 p2 0
H0: p1 p2 0
Ha: p1 p2 = 0
Find the value of the test statistic.? (Round your answer to two decimal places.)Find the p-value.? (Round your answer to four decimal places.)p-value = State your conclusion.Do not reject H0. We can conclude that there is a difference between claim rates.Reject H0. We can conclude that there is a difference between claim rates. Reject H0. We can not conclude that there is a difference between claim rates.Do not reject H0. We can not conclude that there is a difference between claim rates.(b)Provide a 95% confidence interval for the difference between the proportions for the two populations. (Round your answers to four decimal places.) to
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