Question

Independent random samples taken at two companies provided the following information regarding annual salaries of the employees.

Marissa, IncJason, Inc.
Sample Size7250
Sample Mean (in $1,000)4843
Sample Standard Deviation (in $1,000)1210

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 95% confidence, test the hypotheses.

Answer

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