For nos. 29 to 32. Mr. Juan Rafael, the manager of JJ Computer Tech is conducting a study on the number of customers who pay by personal check, by credit card and by debit card. During the course of...

For nos. 29 to 32.
Mr. Juan Rafael, the manager of JJ Computer Tech is conducting a study on the number of customers who pay by personal check, by credit card and by debit card. During the course of five days, he records the following number of purchases made by each method.

29. What is the grand total of all the observations?
A. 121
B. 153
C. 205
D. 479
30. What is the critical F value at a 5% significance level?
A. 0.13
B. 3.08
C. 3.89
D. 7.65
31. What is the F-computed value?
A. 7.65
B. 3.89
C. 3.08
D. 0.13
32. What should be the conclusion as a result of the analysis?
A. The number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech are the same.
B. At least two of the methods of payment in purchasing at JJ Computer Tech are significantly different.
C. There is a significant difference in the number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech.
D. There is no significant difference in the number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech

Extracted text: Credit Debit Check ANOVA Card Card Source of 36 40 45 df MS Feomp Fa Variation Among 30 27 38 718.9333 2 359.4667 groups 20 25 40 Error 564 12 47 15 35 47 Total 1282.933 14 20 26 35 Y. 121 153 205 Absolute Mean Pairs HSD value Description Difference Not significant Significant Check - Credit Card 6.4 Check - Debit Card 16.8 Credit Card - Debit 10.4 Significant Card