DJ Car Rental wants to estimate the average miles traveled per day by each of its cars

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DJ Car Rental wants to estimate the average miles traveled per day by each of its cars rented locally. A random sample of cars is selected with the following results Sample Size =110 Sample Mean = 85.5 miles Sample Standard Deviation = 29.3 miles.

a. Construct a 90 confidence interval for the average miles traveled per day by each of its cars rented locally

b. Interpret this interval

c. How large sample size will need to be selected if we wish to have a 90 confidence interval with a margin for error 10?

Related Book For answer-question

Introductory Statistics

ISBN: 978-0470904107

8th edition

Authors: Prem S. Mann

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Posted Date: Jan 05, 2021 06:25 AM

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DJ Car Rental wants to estimate the average miles traveled per day by each of its cars

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Expert Answer:

Sample Size n 110 Sample Mean xbar 855 miles Sample Standard Deviation 293 miles Answer a To constru... View the full answer

Introductory Statistics

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