SPREADSHEET ANALYSIS For this and the next 6 questions A sam

SPREADSHEET ANALYSIS: For this and the next 6 questions. A sample of the package times (in seconds) of two machines is provided below. You wish to determine if there is evidence that the two machines have the same variability in the package times. What is the correct statement of hypothesis for this test? answer to question 5 and 6?

Solution

The correct statements to test the variability of package times of two machies is

Null hypothesis: The variances of package times of the two machines are equal

Alternative hypothesis: The variance of package time of first machine is greater than /less than the second machine.