Question

A sample of 15 consumers provided the following product ratings for three different products. Five consumers were randomly assigned to test and rate each product.

Product
A	B	C
56	86	66
62	93	43
73	91	36
41	88	51
63	96	58

Use the Kruskal-Wallis test and α = 0.05 to determine whether there is a significant difference among the ratings for the products.

Find the value of the test statistic._____

Find the p-value. (Round your answer to three decimal places.)

p-value = _____

Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who used the programs provided the following data.

Program
A	B	C
530	450	600
400	530	620
460	400	580
520	440	460
460	480	560
640	390	610
	550	590

Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use α = 0.05.

Find the value of the test statistic. (Round your answer to two decimal places.)______

Find the p-value. (Round your answer to three decimal places.)

p-value =_____

Answer 1

The statistical software output for this problem is :

Test statistics = 9.78

P-value = 0.008

2)

Test statistics = 7.55

P-value = 0.023

Kruskal-Wallis results: Data stored in separate columns. DF Chi-Square P-value 9.78 0.0075 Summary statistics Column: