TABLE 12-4 A Computer Used by a 24-Hour Banking Service Is Supposed

Multiple Choice

TABLE 12-4
A computer used by a 24-hour banking service is supposed to randomly assign each transaction to one of 5 memory locations. A check at the end of a day's transactions gave the counts shown in the table to each of the 5 memory locations, along with the number of reported errors.

The bank manager wanted to test whether the proportion of errors in transactions assigned to each of the 5 memory locations differ.
-Referring to Table 12-4, the degrees of freedom of the test statistic is

A) 4.
B) 8.
C) 10.
D) 448.