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1. Assume X = IQ (intelligence quotient) by definition is normally distributed with the mean of 100 and standard deviation (s) of 10. If many samples of size 1000 persons are selected, find out the expected value (mean X-bar) or average of average IQ's for these samples?

a) Sx/1000

b) 100

c) 10/sqrt(1000)

d) None of the above

2. For X stated in problem 1 above, find out the standard error of X-bar?

a) Sx/1000

b) 100

c) 10/sqrt(1000)

d) None of the above

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M923252

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