Mathematics, 03.06.2020 04:57, mya1318
With individual lines at the checkouts, a store manager finds that the standard deviation for the waiting times on Monday mornings is 5.7 minutes. After switching to a single waiting line, he finds that for a random sample of A customers, the waiting times have a standard deviation of B minutes.
a) Use a 0.025 significance level to test the claim that with a single line, waiting times vary less than with individual lines.
Answers: 1
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With individual lines at the checkouts, a store manager finds that the standard deviation for the wa...
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