1.The central problem in the case of one sample hypothesis test is to determine

a.if a sample is random.

b.if sample statistics are the same as those of the sampling distribution.

c.if parameters are representative of population.

d.if a sample came from a population with a certain characteristic.

2.Like estimation procedures, hypothesis testing involves the risk that the sample

a.may not be representative.

b.may not be biased.

c.may be too large.

d.may not be significant.

3.In order to conduct a test of hypothesis with means or proportions, the sampling distribution must be

a.skewed.

b.large.

c.bimodal.

d.normal.