Q Math 54 Collected Work Section 3.4 Collected Work Name: Total points: 10 1. (4) The highest weight of plastic discarded by households: The highest weight is 5.28 lb, the mean of all weights is x ? 1.91 lb., and the standard deviation of the weights is s = 1.065 lb. Convert the weight of 5.28 lb to a z score, then determine whether the weight of 5.28 lb is unusual. 2. (6) The following data represent the number of days between grocery orders at the online delivery company Instacart. 14 5 7 30 14 30 15 3 1 5 8 7 15 11 38 9 6 6 6 8 5 6 10 14 a. Find the quartiles, then find the IQR. b. Determine the lower and upper fences, then find outliers. 1

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