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Confidence interval for the difference in the mean waiting

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Reference no: EM132012116

A random sample of 15 people is selected and the waiting times are collected and stored in Bank1. These data are:

4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.20

4.50 6.10 0.38 5.12 6.46 6.19 3.79

Suppose that another branch, located in a residential area, is also concerned with the noon-to-1 p.m. lunch period. A random sample of 15 people is selected and the waiting times are collected and stored in Bank2. These data are:

9.66 5.90 8.02 5.79 8.73 3.82 8.01 8.35

10.49 6.68 5.64 4.08 6.17 9.91 5.47

  • What is the p-value?
  • What other assumptions are necessary?
  • Calculate a 95% confidence interval for the difference in the mean waiting time from the two branches.

Reference no: EM132012116

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