Question

Asked Dec 12, 2019

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What kind of test should I run for this question and how do I run the test?

During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 26%, NBC 22%, and independents 23%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following viewing audience data: ABC 91 homes, CBS 64 homes, NBC 81 homes, and independents 64 homes. Test with = .05 to determine whether the viewing audience proportions changed. Use Table 12.4.

Step 1

We will use chi-square goodness of fit statistic to test the hypothesis

**Given data and calculation for expected value is shown below**

Step 2

**Formulation of Hypothesis**

**Null Hypothesis H _{0}: -** Viewing audience proportion remains same

**Alternative Hypothesis H _{1}: -** Viewing audience proportion changed.

Test statistic is given by

The formula for the chi-square is given below

Step 3

Degree of freedom ...

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