Repeat Exercise 10.80 without assuming that the standard deviations for the two populations are the same but
Question:
a. Using the sample standard deviations given in Exercise 10.80.
b. Using sample standard deviations of 1.33 and .72 for fire drills and closing time, respectively.
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a The 99 confidence interval for 1 2 is 1 2 ts 1 2 51 42 264924624812 9 65 25 to 155 minutes Step 1 ...View the full answer
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