Instruction 6-4 John Has Two Jobs.For Daytime Work at a Jewelry Store

question 149

Short Answer

Instruction 6-4
John has two jobs.For daytime work at a jewelry store he is paid $15,000 per month,plus a commission.His monthly commission is normally distributed with mean $10,000 and standard deviation $2,000.At night he works as a waiter,for which his monthly income is normally distributed with mean $1,000 and standard deviation $300.John's income levels from these two sources are independent of each other.
-Referring to Instruction 6-4,the probability is 0.95 that John's commission from the jewelry store is at least how much in a given month?

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