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Question: suppose we take a random sample of 10 canadian households...

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5. Suppose we take a random sample of 10 Canadian households and determine their weekly grocery expenses. We get a sample mean of S200 and a sample standard deviation of$50. Assume that the amounts are normally distributed i. Construct a 99% confidence interval for the standard deviation in the grocery expenses of all Canadian households. ii. Test the hypothesis that the standard deviation for all Canadian households is $53, against the alternative hypothesis that it is different from $53, at a .01 level of significance.
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