What age is the boundary for the oldest 20%

Reference no: EM13203280

ages of all students enrolled at Casenec college form a normal distribution with a mean of 25 years and a standard deviation of 5 years.

a) What is the probability that a randomly selected student is between 19 and 28 years old?

b) What is the probability that a randomly selected student is at least 27.4 years?

c) What age is the boundary for the youngest 10%.?

d) What age is the boundary for the oldest 20% ?

Reference no: EM13203280

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