Instruction 6.2 John Has Two Jobs. for Daytime Work at a Jewellery

question 79

Short Answer

Instruction 6.2
John has two jobs. For daytime work at a jewellery 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 6.2,for a given month,what is the probability that John's commission from the jewellery store is at least $12,000?

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Definitions:

Military Advisers

Personnel from the armed forces sent to assist or train the military of other nations without being directly involved in combat operations.

Army-McCarthy Hearings

A series of Congressional hearings in 1954 where Senator Joseph McCarthy's claims of Communist infiltration in the U.S. Army were investigated, leading to his eventual censure.

McCarthy's Rantings

Refers to the careless and aggressive accusations made by Senator Joseph McCarthy during the 1950s, particularly against alleged communists in the U.S.

Unemployment Rate

The percentage of the labor force that is jobless and actively looking for employment, used as an indicator of the health of an economy.