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21) Referring to Table 12-3, the overall or mean proportion
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# Question : 21) Referring to Table 12-3, the overall or mean proportion : 1403639

21) Referring to Table 12-3, the overall or mean proportion of local riders is ________.

22) Referring to Table 12-3, the expected cell frequency in the Male/Local cell is ________.

23) Referring to Table 12-3, the expected cell frequency in the Female/Non-Local cell is ________.

24) Referring to Table 12-3, the critical value of the test is ________.

25) Referring to Table 12-3, the value of the test statistic is ________.

26) True or False: Referring to Table 12-3, the null hypothesis will be rejected.

27) True or False: Referring to Table 12-3, the decision made suggests that there is a difference between the proportion of males and females who ride local versus non-local routes.

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.

 Memory Location: 1 2 3 4 5 Number of Transactions: 82 100 74 92 102 Number of Reported Errors 11 12 6 9 10

The bank manager wanted to test whether the proportion of errors in transactions assigned to each of the 5 memory locations differ.

28) Referring to Table 12-4, which test would be used to properly analyze the data in this experiment?

A) χ2 test of independence

B) χ2 test for difference among more than two proportions

C) McNemar test for the difference between two proportions

D) McNemar test for the difference among more than two proportions

29) Referring to Table 12-4, the degrees of freedom of the test statistic is

A) 4.

B) 8.

C) 10.

D) 448.

30) Referring to Table 12-4, the critical value of the test statistic at 1% level of significance is

A) 7.7794.

B) 13.2767.

C) 20.0902.

D) 23.2093.

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