10.18 A large retail lawn care dealer currently provides a 2-year warranty on all lawn mowerssold at its stores. A new employee suggested that the dealer could save money by just not offeringthe warranty. To evaluate this suggestion, the dealer randomly decides whether or not to offerthe warranty to the next 50 customers who enter the store and express an interest in purchasinga lawnmower. Out of the 25 customers offered the warranty, 10 purchased a mower as comparedto 4 of 25 not offered the warranty.a. Place a 95% confidence interval on π,-T2, the difference in the proportions ofcustomers purchasing lawnmowers with and without the warranty.b. Test the research hypothesis that offering the warranty will increase the propor-tion of customers who will purchase a mower. Use α-,05.

a.Confidence Interval:The form of the confidence interval is,CI = Point estimate ± Margin of…

Answered: 10.18 A large retail lawn care dealer…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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