An insurance actuary claims that the mean footwell intrusions for small and midsize cars are equal. Crash tests at 40 mph were performed on 18 randomly selected small cars and 8 randomly selected midsize cars. The amount that the footwell intruded on the driver's legs was measured. The mean footwell intrusion for the small cars was 11.5 centimeters with a standard deviation of 4.29 centimeters. The mean footwell intrusion for the midsize cars was 11.1 centimeters with a standard deviation of 3.71 centimeters. At a= 0.20, answer parts (a) through (e). Assume the population variances are equal. If convenient, use technology to solve the problem.

An insurance actuary claims that the mean footwell intrusions for small and midsize cars are equal. Crash tests at 40 mph were performed on 18 randomly selected small cars and 8 randomly selected midsize cars. The amount that the footwell intruded on the driver's legs was measured. The mean footwell intrusion for the small cars was 11.5 centimeters with a standard deviation of 4.29 centimeters. The mean footwell intrusion for the midsize cars was 11.1 centimeters with a standard deviation of 3.71 centimeters. At a= 0.20, answer parts (a) through (e). Assume the population variances are equal. If convenient, use technology to solve the problem.

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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