Question: 4: answer the following questions on standard error and normal probability ( 5*2=10) i) a population is normally distributed with a mean of 120 and

4: answer the following questions on standard error and normal probability ( 5*2=10)

i) a population is normally distributed with a mean of 120 and a standard deviation of 18. for sample of size 9, what are the mean and standard error of the sampling distribution?

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