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Title: With individual lines at the checkouts, a store manager finds that the standard deviation for the ... Post by: Acostak1 on Jan 26, 2018 With individual lines at the checkouts, a store manager finds that the standard deviation for the waiting times on Monday mornings is 5.2 minutes.
After switching to a single waiting line, he finds that for a random sample of 29 customers, the waiting times have a standard deviation of 4.2 minutes. Use a 0.025 significance level to test the claim that with a single line, waiting times vary less than with individual lines. Title: With individual lines at the checkouts, a store manager finds that the standard deviation for the ... Post by: preetpatel94 on Jan 26, 2018 Test statistic: X2 = 18.266. Critical value: X2 = 15.308. Fail to reject . There is not sufficient evidence to support the claim that with a single line waiting times have a smaller standard deviation.
Title: With individual lines at the checkouts, a store manager finds that the standard deviation for the ... Post by: Acostak1 on Jan 26, 2018 Thank you for helping me throughout this difficult semester
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