Table 2.15 reproduces the 100 waiting times for teller service that were originally given in Table 1.9.

a. Construct a stem-and-leaf display of the waiting times.
b. Describe the distribution of the waiting times.

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Waiting Times (in Minutes) for the Bank Customer Waiting Time Case os WaitTime TABLE 1.9 1.6 7.9 7.2 6.2 3.2 5.6 6.1 6.6 5.4 6.5 4.4 1.1 3.8 7.3 10.7 5.6 4.9 2.3 4.5 7.2 4.1 5.1 8.7 6.7 6.7 5.4 2.9 7.5 3.9 .8 4.7 8.1 9.1 7.0 3.5 4.6 2.5 3.6 4.3 7.7 5.3 6.3 2.2 6.5 8.3 2.7 4.0 4.5 4.3 5.8 6.4 6.1 3.7 1.4 4.5 3.8 5.1 8.6 6.3 .4 8.6 7.8 1.8 2.0 4.2 6.8 10.2 5.2 3.7 5.5 2.8 5.8 9.8 8.0 8.4 4.0 3.4 2.9 11.6 9.5 6.3 5.7 4.4 9.3 10.9 4.3 1.3 2.4 7.4 9.2 4.7 3.1 4.8 5.2 1.8 3.9 7.4 5.8 9.9 5.0 TABLE 2.15 Waiting Times (in Minutes) for the Bank Customer Waiting Time Case (for Exercise 2.42) OS WaitTime 1.6 6.2 3.2 5.6 7.9 6.1 7.2 6.6 5.4 6.5 4.4 1.1 3.8 7.3 5.6 4.9 2.3 4.5 7.2 10.7 4.1 5.1 5.4 8.7 6.7 2.9 7.5 6.7 3.9 .8 4.7 8.1 9.1 7.0 3.5 4.6 2.5 3.6 4.3 7.7 5.3 6.3 6.5 8.3 2.7 2.2 4.0 4.5 4.3 6.4 6.1 3.7 5.8 1.4 4.5 3.8 8.6 6.3 .4 8.6 7.8 1.8 5.1 4.2 6.8 10.2 2.0 5.2 3.7 5.5 5.8 9.8 2.8 8.0 8.4 4.0 3.4 2.9 11.6 9.5 6.3 5.7 9.3 10.9 4.3 1.3 4.4 2.4 7.4 4.7 3.1 4.8 5.2 9.2 1.8 3.9 5.8 9.9 7.4 5.0