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A population of values has a normal distribution with = 216.1 = 216.1 and = 56.9 = 56.9 . You intend to draw a random
A population of values has a normal distribution with
=
216.1
=
216.1
and
=
56.9
=
56.9
. You intend to draw a random sample of sizen
=
126
n
=
126
.
a.) Find the probability that asinglerandomly selected value is less than 208.
P(X< 208) =Incorrect
b.) Find the probability that a sample of sizen
=
126
n
=
126
is randomly selected with a mean less than 208.
P(M< 208) =Incorrect
(Here M is the mean of the sample)
Enter your answers as numbers accurate to 4 decimal places.
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