Answer (Choose 1 answer)
The standard IQ test has a mean of 96 and a standard deviation of 14. We want to be 90% certain that we are within 4 IQ points of the true mean. Determine the required sample size.
Let 0.05 1.645, 0.025 = 1.96
A. None of the other choices is correct
B. 130
C. 34
D. 1
E. 6
2: 46
