Answered: The Spring 2018 MATH1530 class survey…

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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Question

The Spring 2018 MATH1530 class survey asked “Did you make a New Year’s resolution for 2018?” In the sample survey 292 students responded “Yes” and 381 students responded “No.” Assume that this sample represents all college students. A large-sample 95% confidence interval for estimating the proportion of all college students who did make a 2018 New Year’s resolution is (A) 39.6% to 47.1% (B) 52.9% to 60.4% (C) 72.4% to 80.9% (D) 292 to 381 (E) 253.74 to 330.26 43. In the Math 1530 survey, students were asked “How many times a week do you shower?” Assume the students who responded to the survey represent an SRS of all undergraduates at ETSU. A one-sample t-test was performed to see if the average of the number of times students shower per week is less than 7. Here is the output from Minitab: One-Sample T: SHOWER Test of mu = 7 vs < 7 95% Upper Variable N Mean StDev SE Mean. Bound T P SHOWER 594 6.512 1.552 0.003 6.617 -7.67 0.000 Is there significant evidence at the 5% level that the average number of times ETSU undergraduates shower per week is less than 7?

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