Posted by Tina on .
Sampling Distribution
Complete solutions and illustrations are required.
4.The average breaking strength of a certain steel cable is 2000 pounds, with a standard deviation of 100 pounds. A sample of 20 cables is selected and tested. Find the sample mean that will cut off the upper 95% of all samples of size 20 taken from the population. Assume that the variable is normally distributed.

Sampling Distribution  ENOUGH! 
Ms. Sue,
Please post specifically how you need help on these problems. Do not post any more questions without your attempts to answer them.