# Using the data below, determine whether the proportion for each group is equal using a 5% significance level. Assume that all assumptions are satisfied.       Group  A.                   Group B.             Group C         110.                            150.                     125

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Using the data below, determine whether the proportion for each group is equal using a 5% significance level. Assume that all assumptions are satisfied.

Group  A.                   Group B.             Group C

110.                            150.                     125

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Step 1

According to the given question, to test whether the proportion for each group is equal using a 5% level of significance for the following data:

 Group Group -A Group -B Group- C Total Observed data 110 150 125 385 Expected data 128.3 128.3 128.3 385

We define the test hypothesis as:

Null hypothesis as:  the proportion for each group is equal

Against the alternative hypothesis as; the proportion for each group is not equal

In order to test this hypothesis we used chi square test statistics as follows:

Step 2

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