A parametric test is a hypothesis test that depends on certain specific assumptions about the ...

A parametric test is a hypothesis test that depends on certain specific assumptions about the probability distribution of population values or the sizes of population parameters.
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Q. 2

If a marketer wishes to determine whether there is evidence that average family income in a community exceeds 32,000:
 a. either a one-tail or two-tail test could be used with equivalent results.
  b. a one-tail test should be utilized.
  c. a two-tail test should be utilized.
  d. None of these choices.

Q. 3

The procedure for the Wilcoxon rank sum test requires that we rank each group separately rather than together.
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Q. 4

If the p value is less than  in a two-tail test:
 a. the null hypothesis should not be rejected.
  b. the null hypothesis should be rejected.
  c. a one-tail test should be used.
  d. No conclusion should be reached.

Q. 5

The Wilcoxon rank sum test is used to compare two populations when the samples are independent and the data are either ordinal or interval but not normally distributed.
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