Question

Let X1, X2, X3 be a random sample of size 3 from a distribution that is...

Let X1, X2, X3 be a random sample of size 3 from a distribution that
is Normal with mean 9 and variance 4.
(a) Determine the probability that the maximum of X1; X2; X3 exceeds 12.
(b) Determine the probability that the median of X1; X2; X3 less than
10.
(c) Determine the probability that the sample mean of X1; X2; X3
less than 10. (Use R or other software to find the probability.)

Math   Statistics-And-Probability   
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