Question: need help with these problems A sample of n = 16 scores has a standard error of M = 4. What is the standard deviation

need help with these problems

A sample of n = 16 scores has a standard error of _M = 4. What is the standard deviation of the normally distributed population from which the sample was obtained?

For a normally distributed population with a mean of = 70 and a standard deviation of = 10, what is the probability of obtaining a sample mean greater than M = 67 for a sample of n = 64 scores?

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