Friday

January 30, 2015

January 30, 2015

Posted by **Brandon** on Monday, December 17, 2007 at 5:18pm.

Because of vibration, the machine shifts from 25 ml. To check the machine, you select at random three samples of four boards and find the mean thickness of each.

You select a board. Assume the machine shifts and is cutting boards with a mean thickness of 25.4 ml and a standard deviation of .2 ml.

Question: What is the probability that you select a board that is not outside the acceptable range?

Question: You randomly select 12 boards. What is the probabiliy you select at least one boards that is not outside the acceptable range?

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