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Mathematics, 26.11.2019 22:31 stefanylopez731

The aluminum association reports that the average american uses 56.8 pounds of aluminum in a year. a random sample of 50 households is monitored for one year to determine aluminum usage. if the population standard deviation of annual usage is 12.1 pounds, what is the probability that the sample mean will be each of the following? appendix a statistical tablesa. more than 58 poundsb. more than 57 poundsc. between 55 and 57 poundsd. less than 53 poundse. less than 48 pounds

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