Discussion:
Q: The following sample data shows the quarterly earnings in millions for two US companies. Your research interest is finding if the average earnings for these companies are different. Justify your answer by doing a five step testing of the hypothesis at the 0.05-level of significance. Show all the steps of the calculations.
Company 1......Company 2
17.8......................18.01
18.........................17.75
17.98.......................18
18.2......................17.77
18.00....................18.01
17.99....................18.01
18.1......................18.12
17.9......................18.2