Question

Managers in the human resources department suspect that​ sick-day absentee rates are higher on some weekdays...

Managers in the human resources department suspect that​ sick-day absentee rates are higher on some weekdays than others. What test can they use to investigate this​ claim? Choose the correct answer below.

A. A​ two-sample z-test for proportions can be used to investigate the claim because the manager is interested in the association between two numerical proportions.

B. A​ chi-squared test of goodness of fit can be used to investigate the claim because the manager is interested in whether or not the distribution of sick days follows a certain distribution.

C. A​ chi-squared test of​ independence, based on a 5times2 contingency​ table, can be used to investigate the claim because the manager is interested in the association between two categorical variables.

D. A​ two-sample t-test can be used to investigate the claim because the manager is interested in the association between two numerical variables.

Math   Statistics-And-Probability   
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Answer #1

The answer is:

B. A​ chi-squared test of goodness of fit can be used to investigate the claim because the manager is interested in whether or not the distribution of sick days follows a certain distribution.

The manager can use this to check where he can take the expected proportions to be the same for each weekday and then try to fit in the data provided.

Let me know in the comments if anything is not clear. I will reply ASAP! Please do upvote if satisfied!

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