3.3.24 Question Help Waiting times (in minutes) of customers at a bank where all

Question

3.3.24 Question Help Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation. Bank A (single line): 6.5 6.6 6.6 6.7 7.1 7.4 7.4 7.7 7.7 7.7 Bank B (individual lines): 4.1 5.4 5.7 6.2 6.8 7.6 7.7 8.5 9.3 9.9 The coofficient of variation for the waiting times at Bank A is%. Round to one decimal place as needed.) Enter your answer in the answer box and then click Check Answer.

Explanation / Answer

The statistical software output for this problem is:

Summary statistics:

Hence,

Coefficient of variation of Bank A = 7.0%

Coefficient of variation of Bank B = 25.6%

Column Coef. of var. Bank A 7.0245538 Bank B 25.640732

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