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2 I surveyed each house on the block to determine how much we are spending...

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2 I surveyed each house on the block to determine how much we are spending on Halloween treats The distribution below represents the results in dollars Spent mid 50 59 54 5 40 49 44 5 30 39 34 5 20 29 24 5 10 19 14 5 0 9 4 5 1 2 5 12 7 7 Calculate the 90 confidence interval of the mean and present it in a sentence that shows your understanding of the meaning of the confidence interval b Calculate whether there has been a significant increase over the average 18 reported in the neighborhood newspaper State the hypotheses alpha df and critical value Write a report including all necessary information about your results

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