Mathematics, 02.12.2021 21:00, theresamarieuehling2

21. An economist wishes to estimate, to within with % confidence, the mean amount spent annually by American households on clothing. Assuming the standard deviation of the amount spent is $175, the minimum sample size needed is about : (a) 33 (b) 62 (c) 39 ( ) 84 ( e) 48

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21. An economist wishes to estimate, to within with % confidence, the mean amount spent annually by...