Statistics help please? 10 pts
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Statistics help please? 10 pts

[From: ] [author: ] [Date: 12-04-04] [Hit: ]
-sqrt 45 * 3.7 /45 = 0.1/0.551563 = 1.8 Z above 50%, in the normal curve,......
I am having a very hard time in my statistics class. I would really appreciate your help and how you got the answer.

For a sample of n=45, find the probability of a sample mean being greater than 551 if the population mean is 550 and the population standard deviation is 3.7.

thanks so much!

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sqrt 45 * 3.7 /45 = 0.551563 this is 1 SE
551-550 = 1
1/0.551563 = 1.8 Z above 50%, in the normal curve, you'd have about 4%
1
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