You measure 32 backpacks' weights, and find they have a mean weight of 70 ounces. Assume the population standard deviation is 12.2 ounces. Based on this, find the MOE (Margin of Error) at a 95% confidence level. Give your answer as decimal, to two places Hint: First, use invNorm() on TI-83/84 to find the critical value of Z and then insert into formula below. MOE Zcrit = ounces Submit Question

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