For this assignment you submit answers by question parts. The number submission

Question

For this assignment you submit answers by question parts. The number submission remaining for each question part only change if you or change the answer Your last submission is used for your score. Do private practice doctors and hospital doctors have the same distribution of working hours? Suppose that a sample of 100 private practice doctors and 150 hospital doctors are selected are random and asked about the number of hours a week they work. The results are shown in the table below. what is the test statistic?

Explanation / Answer

This is an example of the chi-square test

The Observed and expected values, and the calculation of the test statistic are in the tables below.

Each Cell of the expected value = (Row Total * Column Total) / Total participants

Hence the test statistic X2(chi square) = 22.50 (rounded to 2 decimal places)

Observed 20-30 30-40 40-50 50-60 Total Private 16 40 38 6 100 Hospital 8 44 59 39 150 Total 24 84 97 45 250

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