Seleccione una:А.The population variances are approximately equal.В.Both populations of salaries (male and female) must have approximate normal distributions.O C.The samples were randomly and independently selected.O D.All of the above assumptions were necessary. TABLE 10-2A researcher randomly sampled 30 graduates of an MBA program and recorded data concerning their startingsalaries. Of primary interest to the researcher was the effect of gender on starting salaries. The result of thepooled-variance t test of the mean salaries of the females (Population 1) and males (Population 2) in the sample isgiven below.Hypothesized DifferenceLevel of Significance0.05Population 1 SampleSample SizeSample MeanSample Standard Deviation189921013577Population 2 SampleSample SizeSample MeanSample Standard Deviation1210582011741Difference in Sample MeanstTest Statistic-6610-1.37631Lower-Tail TestLower Critical Valuep-Value-1.701130.089816Referring to Table 10-2, the researcher was attempting to show statistically that the female MBA graduates have asignificantly lower mean starting salary than the male MBA graduates. What assumptions were necessary toconduct this hypothesis test?

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А. The population variances are approximately equal. В. Both populations of salaries (male and female) must have approximate normal distributions. С. The samples were randomly and independently selected. O D. All of the above assumptions were necessary.

А. The population variances are approximately equal. В. Both populations of salaries (male and female) must have approximate normal distributions. С. The samples were randomly and independently selected. O D. All of the above assumptions were necessary.

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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