Question

46) The following are the ratings (0 to 4) given by 12 individuals for two possible new flavors of soft drinks.

Flavor	A	B	C	D	E	F	G	H	I	J	K	L
#1	4	2	3.5	1	0	3	2.5	4	2	0	3	2
#2	3	3	3	2.5	1.5	3.5	4	3	2	1	2	2

Wilcoxon rank-sum is to be used.

What is the z-test statistic?

A) −0.3464

B) 0.3464

C) 8.6602

D) 0.2807

61) When the paired observations are equal in a Wilcoxon signed-rank test hypothesis ________.

A) observations are removed from the analysis.

B) the ranks are averaged.

C) a zero is assigned to the difference and retained in the analysis.

D) observations are removed from the analysis and n is not changed

67) In the Kruskal–Wallis test for the following data, what are the degrees of freedom?

Sample 1	Sample 2	Sample 3
23	14	33
31	18	38
33	23	40
40	25	49
55	30	50
71

A) 5

B) 2

C) 16

D) 15

Answer 1

What is the z-test statistic =-0.3464

option A is correct

61) A) observations are removed from the analysis.

67)

degrees of freedom =number of categories-1= 3-1 =2