Become a Member  Maximum error of estimate  1. Consider a normal
population with a mean+ 25 and a standard deviation= 7.0. A.
Calculate the standard score for a value x of 24. B. Calculate
the standard score for a randomly selected sample of 45 with a
sample mean = 25. C. Explain why the standard scores of 24 are
different between A and B above.  2. Assume that the mean score
on a certain aptitude test across the nation is 100 and that the
standard deviation is 20 points. Find the probability that the
mean aptitude test score for a randomly selected group of 150
students is between 95 and 105.  3. Assume that a sample is
drawn and z(? /2)= 1.96 and standard deviation=35. Answer the
following questions: A. If the Maximum Error of Estimate is 0.02
for this sample, what would be the sample size?  B. Given that
the sample size is 400 with the same z(? /2) and standard
deviation, what would be the Maximum error of Estimate?  C. What
happens to the Maximum Error of Estimate as the sample size gets
smaller?  D, What