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In large population of college educated adults the man IQ score is 115 with a standard deviation of 15. Suppose 15 adults from this population are randomly slected for a survey of fear of crime.
a) What is mean of this sampling distribution (all samples of n=150) ?=
b) What is the standard deviation of sampling distribution?
c) What is the shape of sampling distribution?
d) If you change the sample size to 50 what will change?
e) What percent of sample have a mean IQ of less than 118?
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