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At a mcdonalds the distribution of the number of seconds it takes for a cashier to process an order is approx normal with a mean

At a mcdonalds the distribution of the number of seconds it takes for a cashier to process an order is approx normal with a mean of 276 seconds and standard deviation of 38seconds. Which of the following is closest to the proportion of orders that are processsed in less than 240 seconds?

A- .17

B- .25

C-.36

D-.83

E- .95

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