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The average amount of calories from a hamburger served in a restaurant is 220 per order with a standard deviation of 30 calories. (a) What

The average amount of calories from a hamburger served in a restaurant is 220 per order with a standard

deviation of 30 calories. (a) What is the probability that a selected hamburger has at most 180 calories?

(b) What is the probability that the mean calories from 20 orders is between 200 and 240 calories?

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