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51) True or False: Referring to Table 12-5, there sufficient

Question : 51) True or False: Referring to Table 12-5, there sufficient : 1403642

 

51) True or False: Referring to Table 12-5, there is sufficient evidence to conclude that the proportions between procedure B and procedure D are different at a 0.05 level of significance.

52) Referring to Table 12-5, what is the value of the critical range for the Marascuilo procedure to test for the difference in proportions between procedure C and procedure D using a 0.05 level of significance?

53) True or False: Referring to Table 12-5, there is sufficient evidence to conclude that the proportions between procedure C and procedure D are different at a 0.05 level of significance.

TABLE 12-6

 

According to an article in Marketing News, fewer checks are being written at the grocery store checkout than in the past. To determine whether there is a difference in the proportion of shoppers who pay by check among three consecutive years at a 0.05 level of significance, the results of a survey of 500 shoppers in three consecutive years are obtained and presented below.

 

54) Referring to Table 12-6, what is the expected number of shoppers who pay by check in year 1 if there is no difference in the proportion of shoppers who pay by check among the three years?

55) Referring to Table 12-6, what is the expected number of shoppers who do not pay by check in year 3 if there is no difference in the proportion of shoppers who pay by check among the three years?

56) Referring to Table 12-6, what is the form of the null hypothesis?

A) H0 : π1 = π2 = π3

B) H0 : π1 = π2π3

C) H0 : π1 π2 = π3

D) H0 : π1π2π3

57) Referring to Table 12-6, what is the form of the alternative hypothesis?

A) H1 : π1π2π3

B) H1 : π1π2 = π3

C) H1 : π1 = π2 ≠ π3

D) H1 : not all πj are the same

58) True or False: Referring to Table 12-6, the assumptions needed to perform the test are satisfied.

59) Referring to Table 12-6, what are the degrees of freedom of the test statistic?

60) Referring to Table 12-6, what is the value of the test statistic?

 

 

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