Which of the following statements is true regarding efficiency?
a. It is the ratio of the sample size of the best nonparametric test to the sample size of the best parametric test when compared under a fixed set of risk values.
b. It is the ratio of the sample size of the best parametric test to the sample size of the best nonparametric test when compared under a fixed set of risk values.
c. It is the sum of the sample size of the best nonparametric test and the sample size of the best nonparametric test when compared under a fixed set of risk values.
d. It is the difference of the sample size of the best parametric test and the sample size of the best nonparametric test when compared under a fixed set of risk values.
Question 2
If you wish to construct 80 lower confidence bound (LCB) for the population mean , then the z-value you should use is approximately:
a. .84
b. 1.28
c. 1.96
d. 2.33
e. 2.58
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