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Suppose you know that the amount of time it takes your friend Susan to get from...

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Basic Math

Suppose you know that the amount of time it takes your friendSusan to get from her residence to class averages  50minutes, with a standard deviation of 55 minutes. What proportionof Susan's trips to class would take more than  50minutes? . Enter your answers accurate to two decimal places.

What proportion of her class would take more than  50minutes?

What proportion of Susan's trips to class would take less than40 minutes?

What proportion of Susan's trips to class would take morethan  50 minutes or less than  40 minutes?

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