The management of a grocery store observes various employees for work productivity. Table 10.3.3 gives the number

Question:

The management of a grocery store observes various employees for work productivity. Table 10.3.3 gives the number of customers served by each of its four checkout lanes per hour.
(a) Construct an ANOVA table and interpret the results. Indicate any assumptions that were necessary.
(b) Test whether there is a difference between the mean numbers of customers served by the four employees at the 0.05 level. Assume that the conditions of completely randomized design are met.
Table 10.3.3