Please provide steps, thank you. Exercise 3.24 THE BANK CUSTOMER WAITING TIME CA

Question

Please provide steps, thank you.

Exercise 3.24 THE BANK CUSTOMER WAITING TIME CASE A sample of 100 bank customer waiting times are given in the following table Waiting Times (in Minutes) for the Bank Customer Waiting Time Case 10.2 6.2 11.7 11.3 6.2 7.5 10.1 8.7 2.1 5.8 4.8 5.3 8.6 6.4 6.5 4.1 8.0 9.0 2.9 9.2 7.9 6.5 4.4 6.5 7.1 10.7 4.5 7.0 4.3 5.9 9.0 2.8 3.4 10.3 6.4 4.1 4.4 8.2 2.8 8.5 5.7 5.5 5.2 6.9 8.1 9.7 8.2 6.4 2.6 5.0 5.4 1.7 4.5 10.8 2.5 8.1 7.0 5.5 2.1 2.5 8.4 5.1 4.0 6.1 4.2 10.3 9.4 2.7 5.9 4.4 4.7 5.1 4.6 2.6 7.0 5.7 7.0 8.7 4.6 4.6 7.4 4.9 6.4 6.7 7.3 9.5 5.7 6.9 6.9 11.8 7.4 5.9 7.7 6.2 4.5 8.0 The mean and the standard deviation of the sample of 100 bank customer waiting times are R 6.126 and s 2.613. (a) What does the histogram in Figure 2 16 say about whether the Empirical Rule should be used to describe the bank customer waiting times? somewhat reasonable t is

Explanation / Answer

c)

Yes, because the upper limit of the 68.26% is lower than 9 min

d)

68% in x+/-s

95% in x+/-2*s

99% in x+/- 3*s

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