A normal random variable x has an unknown mean 
and a standard deviation 
. If the probability that x exceeds 7.5 is 0.8289, find 
Definitions:
Cash Quickly
A term referring to methods or strategies used to obtain liquid funds in a short period of time.
Present Value Factor
A number by which a future payment is multiplied to determine its present value.
Annuity
An economic scheme that delivers fixed periodic earnings to recipients, usually serving as financial support for those retired.
Payments
Transactions where a good or service is exchanged for monetary compensation.
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