a bank found that the average monthly checking balance of itscustomers is $10000 with a standard deviation of $4500. a randomsample of 12 accounts is selected.
1. what is the probability that the average checking balancewill be more than 13000
2. what is the probability that the monthly balance will be lessthan 4000
3.assume that this bank offers a special credit card to onepercent of its customers with the highest checking balance. what isthe minimum amount a customer should have to be eligible for thatcredit card?
