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The time for a certain female student to commute to SCSU is Normally Distributed with mean...

The time for a certain female student to commute to SCSU is Normally Distributed with mean 32.5 minutes and standard deviation of 6.3 minutes.

A. Find the probability her commuting time is more than 40 minutes.

B. Find the probability her commuting time is less than 43 minutes.

C. Find the value t such that 10% of her commuting times are greater than t.

D. Between which two values will the middle 70% of her commuting times fall?

E. Find the probability her commuting time is between 31.5 and 42.5 minutes.

Math   Statistics-And-Probability   
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