Question

A simple random sample of size n equals 12 is obtained from a population with mu equals 66 and sigma equals 17. (b)​ P(x overbarless than69.7​) equals ​(Round to four decimal places as​ needed.) How do I use technology to calculate?

Answer 1

We know that the distribution of can we approximated as:

(b)

Thus the required probability is given by:

I used excel to calculate the above answer. After calculating the z-score = 0.753952, I used the command '=NORM.S.DIST(0.753952,TRUE)' to calculate the final answer.

For any queries, feel free to comment and ask.

If the solution was helpful to you, don't forget to upvote it by clicking on the 'thumbs up' button.