SOLUTION: A population has a mean of 200 and a standard deviation of 50.suppose a simple random sample of size 100 is selected and used to estimate population mean(u),what is the probability
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Question 1149463: A population has a mean of 200 and a standard deviation of 50.suppose a simple random sample of size 100 is selected and used to estimate population mean(u),what is the probability that the sample mean will be within +/-5 of the Population mean
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
half-interval=z*sigma/sqrt(n)
5=z*50/sqrt(100)=5z
z=1
or z=-1
That probability is between those two z values or 0.6826
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