Mathematics, 08.04.2020 00:20 LEXIEXO
Among all monthly bills from a certain credit card company, the mean amount billed was $485 and the standard deviation was $300. In addition, for 15% of the bills, the amount billed was greater than $1000. A sample of 900 bills is drawn. What is the probability that the average amount billed on the sample bills is greater than $500? What is the probability that more than 150 of the sampled bills are for amounts greater than $1000
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Among all monthly bills from a certain credit card company, the mean amount billed was $485 and the...
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