A random sample of size n = 100 is used to estimate the mean of an...
A random sample of size n = 100 is used to estimate the mean of an infinite population with the mean m = 76 and standard deviation of s2 = 256. What is the probability of getting a sample average between 75 and 78? Please draw the distribution curve and indicate rejection regions.
Homework Answers
Here we need to find 
As n=100>30, as per central limit theorem distribution of sample mean is normal
Hence we can convert sample mean to z
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