Question: Twenty (20) randomly selected students were asked how many hours they spend each week watching television. They reported a sample mean and standard deviation of

Twenty (20) randomly selected students were asked how many hours they spend each week watching television. They reported a sample mean and standard deviation of 26.4 and 8.2 respectively. Assume that the population of times is approximately normal. Test at the 0.05 level the claim that the standard deviation among the numbers of hours per week spent by all students is 12. What is the critical values, text statistics and conclusion

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