Researchers Have Selected a Simple Random Sample of Size N

question 79

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.

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