Question: / CAN YOU PLEASE ANSWER D AND E To compare three brands of computer keyboards four data entry specialists were randomly selected. Each specialist used

/ /CAN YOU PLEASE ANSWER D AND E To compare three brands of CAN YOU PLEASE ANSWER D AND E

To compare three brands of computer keyboards four data entry specialists were randomly selected. Each specialist used all three keyboards to enter the same kind of text material and the number of words entered per minute was recorded. The obtained data are given in the table below. Data entry specialist Keyboard 1 2 3 4 brand A 77 71 74 67 B 67 62 63 57 C 63 59 59 54 For this situation a. What type of design was employed in this experiment? (1 mark) b. Identify the response variable for this experiment. (1 mark) c. Identify the factor that should influence the response and list the levels of the factor. (1 mark) d. What general name can you give to each of four groups of data entry specialists? (1 mark) e. If MSE = 0.445, find individual 95% confidence interval for the difference in mean number of words typed per minute using keyboard A and keyboard B. (2 marks)

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