A researcher wanted to investigate if people who belong to different income groups are homogeneous with regard to playing lotteries. She took a sample of 600 people from the low-income group, another sample of 500 people from the middle-income group and a third sample of 400 people from the high income group. All these people were asked whether they play the lottery often, sometimes, or never. The results of the survey are summarized in the following table.
Using a 5% significance level, can you reject the null hypothesis that the percentages of people who play the lottery often, sometimes, and never are the same for each income group?

  • CreatedAugust 25, 2015
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