Kaminski et al XXXXXXXXXXpresent data on the number of orders per truck at a distribution center. Some of this data is shown in Table 7E.20. (a) Set up a c chart for the number of orders per truck. Is...

Kaminski et al. (1992) present data on the number of orders per truck at a distribution center. Some of this data is shown in Table 7E.20.

(a) Set up a
cchart for the number of orders per truck. Is the process in control?

(b) Set up a
tchart for the number of orders per truck, assuming a geometric distribution with
a= 1. Is the process in control?

(c) Discuss the findings from parts (a) and (b). Is the Poisson distribution a good model for these data? Is there evidence of this in the data?