SOLUTION: 6. X has a normal distribution with a mean of 70.0 and a standard deviation of 3.0. Find the following probabilities: (A) P(x < 68.0) (B) P(68.0 < x

SOLUTION: 6. X has a normal distribution with a mean of 70.0 and a standard deviation of 3.0. Find the following probabilities: (A) P(x < 68.0) (B) P(68.0 < x < 72.0) (C) P(x>73.0)

Question 309145: 6. X has a normal distribution with a mean of 70.0 and a standard deviation of 3.0. Find the following probabilities:

(A) P(x < 68.0)
(B) P(68.0 < x < 72.0)
(C) P(x>73.0)

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the z score for each x and use the normal distribution function.
a)

P(x<68.0)=
.
.
.
b)

P(68.0 < x < 72.0) =
.
.
.
c)

{P(x>73.0)=
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