question refers to the data in the file HExer.txt

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Question 5
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This question refers to the data in the file HExer.txt, which
shows the responses from a survey from 20 people about the
time used for exercise in a week (denoted as HExer, in hours).
• Researchers divide people into three groups according to
hours of exercises taken in a week. The first group of
people exercise less than 7 hours, the second group of
people exercise between 7 and 10 hours, and the third
group of people exercise more than 10 hours.
Researchers are interested to see whether the population
proportions of these groups are the same, and ask you for
help. Test this hypothesis using a significance level of
0.01. Clearly state your method, the value of your test
statistic and its null distribution, the p-value and your
conclusion.
Your Answer:

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