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 PolicyholdersMarried Policyholders n1=550 n2=1,000Number making claims = 110Number making claims = 150 a. Use a=0.05 Test to determine whether the claim rates differ between single and married male policyholders.z-value (to 2 decimals)p-value (to 4 decimals) b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number.( , )

Let's go ahead and calculate both the z-value and the p-value for the test, and then the 95%…

Answered: A large automobile insurance company…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 3CR

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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=550	n2=1,000
Number making claims = 110	Number making claims = 150

a. Use a=0.05 Test to determine whether the claim rates differ between single and married male policyholders.

z-value	(to 2 decimals)
p-value	(to 4 decimals)

b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number.

( , )

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