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Chapter 11: Q. 51 (page 658)

Do private practice doctors and hospital doctors have the same distribution of working hours? Suppose that a sample of 100private practice doctors and 150hospital doctors are selected at random and asked about the number of hours a week they work. The results are shown in Table

What is the p-value?

Short Answer

Expert verified

Thep-value is0.00051.

Step by step solution

01

Given information

The given data is

02

Explanation

From the given data

df=(no.ofcolumns-1)(no.ofrows-1)

=(4-1)(2-1)=3×1=3

The chi-square test statistic is

∑i,j(O-E)2E

Expected values are E, observed values are O, and the number of rows and columns in the table are i,j.

Using MS Office Excel, the calculated test statistic is

x2=22.5037

p-value=Pχ2>22.5037=0.00051

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