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Description: 2) Two groups of students were surveyed – 86 students were enrolled in a class that required the purchase of lecture notes with mean for this sample being 8.48 and sample variance 0.94. While 35 students were enrolled in another class that did not re

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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2) Two groups of students were surveyed – 86 students were enrolled in a class that required the purchase of lecture notes with mean for this sample being 8.48 and sample variance 0.94. While 35 students were enrolled in another class that did not require the purchase of lecturer notes mean for this sample being 7.80 and sample variance 2.99. The students need to decide whether or not to purchase the lecture notes? a) Hypothesis testing: Do the samples provide sufficient evidence to conclude that there is a difference in the mean responses of the two groups of students? Test using a level of significance = 0.01 (1%). b) Construct a 99% confidence interval for the difference between the two samples and interpret the results. c) Calculate the P-Value and interpret.

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