The amount of time taken by a bank teller to serve a randomly selected customer has a

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The amount of time taken by a bank teller to serve a randomly selected customer has a normal distribution with a mean of 2 minutes and a standard deviation of .5 minute.
a. What is the probability that both of two randomly selected customers will take less than 1 minutes each to be served?
b. What is the probability that at least one of four randomly selected customers will need more than 2.25 minutes to be served? Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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