Question

Questions 48-49: You are conducting a randomized block design, testing a new type of medicine that’s supposed to lower cholesterol, with the following partial summary: Source     SS DF Medicine   5.20   4 Block   ___ __ Error   0.54   6 Total 12.91 19 48. What was the total sample size?: *

(A) 4 (B) 6 (C) 9 (D) 20

49. Find the block sum of squares: *

(A) 1.17 (B) 1.73 (C) 7.17 (D) 7.71

50. Which of the following are assumptions for the ANOVA procedure? (I) Independent subjects (II) Normality (III) Equal variances (IV) Nonnegative Data: *

(A) I, II, and III only (B) II and III only (C) II, III, and IV only (D) I, II, III, and IV (E) I, III, and IV only

Answer 1

48)

We know that,

df(Total) = n-1

So, 19 = n-1

n=20 which is the total sample size.

Hence option D is the correct option.

49)

We know that,

SS(Block) = SS(Total)-SS(Medicine)-SS(Error)

= 12.91-5.20-0.54

= 7.17

Hence option C is the correct option.

50)

We know that Independece, normality and equal vairances are the assumptions of the ANOVA procedure whereas Non-negative data is not.

Hence option A is the correct option.