Chapter 26, Problem 14E

a)

To determine

To state which test would be appropriate for given situation.

Answer to Problem 14E

Chi-square test for independence.

Explanation of Solution

Given:

  

The researcher is interested to check whether the variables are dependent. Also, there is count given for two variables. Hence, Chi-square test for independence would be appropriate to use.

b)

To determine

To state null and alternative hypotheses.

Answer to Problem 14E

H₀: Publication year and statistics are independent.

H_a: Publication year and statistics are not independent.

Explanation of Solution

Given:

  

The null and alternative hypotheses are:

H₀: Publication year and statistics are independent.

H_a: Publication year and statistics are not independent.