The television station ABC wants to determine whether men and women watch the same amount of television, on average, per day. In order to test this claim, the station, by means of a television ad, has asked volunteers to respond to a survey regarding how much time they spend watching television. There were 173 women and 214 men who responded to the ad. The mean time for each of the two groups was computed and a t-test statistic was computed, comparing two independent samples. Which of the following changes is necessary to make the test more accurate? O a. The samples should have been taken by a random process, and not by a voluntary procedure. Equal sample sizes should have been taken. O b. O C. The test should have been done as a paired t-test. O d. O e. The sample sizes should have been larger. The test should have been done with a z-statistic instead of t-statistic.
The television station ABC wants to determine whether men and women watch the same amount of television, on average, per day. In order to test this claim, the station, by means of a television ad, has asked volunteers to respond to a survey regarding how much time they spend watching television. There were 173 women and 214 men who responded to the ad. The mean time for each of the two groups was computed and a t-test statistic was computed, comparing two independent samples. Which of the following changes is necessary to make the test more accurate? O a. The samples should have been taken by a random process, and not by a voluntary procedure. Equal sample sizes should have been taken. O b. O C. The test should have been done as a paired t-test. O d. O e. The sample sizes should have been larger. The test should have been done with a z-statistic instead of t-statistic.
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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