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Suppose x has a distribution with a mean of50and a standard deviation of9. Random samples of size n =36 are drawn. (a) Describe the x
Supposexhas a distribution with a mean of50and a standard deviation of9. Random samples of sizen=36
are drawn.
(a) Describe thexdistribution and compute the mean and standard deviation of the distribution.
I have x=50 x= 1.5 and that x has an approximately normal distribution?
(b) Find thezvalue corresponding tox=47.
z=
(c) FindP(x<47).
(Round your answer to four decimal places.)
P(x<47) =
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