SOLUTION: I am trying to determine the probability of the following question. The height of 18 year old men are approximately normally distributed with a mean of 68 inches and a standard

Question 935951: I am trying to determine the probability of the following question.
The height of 18 year old men are approximately normally distributed with a mean of 68 inches and a standard deviation of 3 inches. What is the probability that the average height of a sample of twenty 18 year olds will bel less than 69 inches?
I assumed I was trying to determine P(65<68<69).
Answer by reviewermath(1029) (Show Source): You can put this solution on YOUR website!
The height of 18 year old men are approximately normally distributed with a mean of 68 inches and a standard deviation of 3 inches. What is the probability that the average height of a sample of twenty 18 year olds will be less than 69 inches?
Solution:
The z score for 69 is = 1.4907
P(Z < 1.4907) =
RELATED QUESTIONS
If a random sample of eight 18-year-old men is selected, what is the probability that the (answered by VFBundy)

Suppose the heights of 18-year-old men are approximately normally distributed, with mean... (answered by ewatrrr)

Hello,I was able to find the probability for the entire population, but I haven't figured (answered by rothauserc)

The heights of 18-year-old men are approximately normally distributed with mean 68 inches (answered by stanbon)

The heights of 18-year-old females are approximately normally distributed with a mean of... (answered by Boreal)

Norma and Lauretta went to a store to buy DVDs on sale for $5 each,tax included. Norma... (answered by scott8148)

Let X be a random variable that represents the diastolic blood pressure (DBP) of the... (answered by CPhill)

In the country of United States of Heightlandia, the height measurements of ten-year-old... (answered by ewatrrr)