Question: A population of values has a normal distribution with = 144 =144 and = 34 =34 . You intend to draw a random sample of

A population of values has a normal distribution with

=

144

=144

and

=

34

=34

. You intend to draw a random sample of sizen

=

18

n=18

.

Find the probability that a single randomly selected value is less than 154.4.

P(X< 154.4) =

Find the probability that a sample of sizen

=

18

n=18

is randomly selected with a mean less than 154.4.

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