Researchers Have Selected a Simple Random Sample of Size N

Multiple Choice

Researchers have selected a simple random sample of size n = 12 from a population for the purpose of testing the null hypothesis H₀:  = ₀ against the alternative hypothesis H_a:  > ₀.Studies indicate that a substantial degree of skewness can be expected in the population from which the sample was obtained.What might the researchers consider doing in this situation?

A) There really isn't anything they can do;they simply have to proceed with what the data give them.
B) They might proceed as usual but alter the P-value later to compensate for the skewness in their data.
C) They might use a test procedure that doesn't require Normality,such as a sign test using the median.
D) They might apply a transformation to the data,such as a logarithm,to try to achieve symmetry.
E) C and D are each possible approaches they might consider using.