Mathematics

Cali

26 July, 08:30

In a large university the average age of all the students is 24 years with a standard deviation of 9 years. a random sample of 36 students is selected.

a. determine the standard error of the mean.

b. what is the probability that the sample mean will be larger than 19.5?

c. what is the probability that the sample mean will be between 25.5 and 27 years?

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