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1. For the population with mean of (u)=50 and standard deviation of (o)=10, how much error on average would you expect between sample mean (M) and population mean for given samples

A sample of N= 4 scores
A sample of N= 16 score
A sample of N=25 scores...

2. Population of IQ scores forms normal distribution with mean of µ = 100 and standard deviation of o = 15. Determine the probability of obtaining sample mean greater than M = 105.

a- For random sample of n = 9 people
b- For random sample of n = 36 people

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