Independent random samples taken at two companies provided the following information regarding annual salaries of the employees. The population standard deviations are also given below. Company A Company B Sample Size 72 50 Sample Mean (in $1000) 48 43 Population Standard Deviation (in $1000) 12 10
Independent random samples taken at two companies provided the following information regarding
annual salaries of the employees. The population standard deviations are also given below.
Company A Company B
Sample Size 72 50
Sample Mean (in $1000) 48 43
Population Standard Deviation (in $1000) 12 10
a. We want to determine whether or not there is a significant difference between the average
salaries of the employees at the two companies. Compute the test statistic.
b. Compute the p-value; and at α = .05, test the hypotheses.
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