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An automobile insurance company claims that its rates for teenage drivers average $470 less per year than the same coverage from another company. In a random sample of 30 customers, the average savings was $435 per year, with a standard deviation of $65 per year. What is the z-value rounded to the nearest hundredth? Is there enough evidence to reject the claim?

An automobile insurance company claims that its rates for teenage drivers average $470 less per year than the same coverage from another company. In a random sample of 30 customers, the average savings was $435 per year, with a standard deviation of $65 per year. What is the z-value rounded to the nearest hundredth? Is there enough evidence to reject the claim?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 30PPS
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An automobile insurance company claims that its rates for teenage drivers average $470 less per year than the same coverage from another company. In a random sample of 30 customers, the average savings was $435 per year, with a standard deviation of $65 per year. What is the z-value rounded to the nearest hundredth? Is there enough evidence to reject the claim?
Transcribed Image Text:An automobile insurance company claims that its rates for teenage drivers average $470 less per year than the same coverage from another company. In a random sample of 30 customers, the average savings was $435 per year, with a standard deviation of $65 per year. What is the z-value rounded to the nearest hundredth? Is there enough evidence to reject the claim?
The z-value is 0.54. There is enough evidence to reject the claim. O The z-value is -0.54. There is not enough evidence to reject the claim. O The z-value is -0.54. There is enough evidence to reject the claim. The z-value is 0.54. There is not enough evidence to reject the claim.
Transcribed Image Text:The z-value is 0.54. There is enough evidence to reject the claim. O The z-value is -0.54. There is not enough evidence to reject the claim. O The z-value is -0.54. There is enough evidence to reject the claim. The z-value is 0.54. There is not enough evidence to reject the claim.
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