6. As the test statistic becomes larger, the p-value
(a) gets smaller
(b) becomes largerĀ
(c) stays the same, since the sample size has not been changed
(d) becomes negative.
Ā
7. To describe the sampling distribution of the sample proportion, we use
(a) The sample proportionĀ
(b) The population proportionĀ
(c) The population mean
(d) The population mean
Ā
8. When small samples are used to estimate a population mean, in cases where the population standard deviation is unknown and the original distribution is normal:
(a) There always will be a large amount of sampling error.
(b) the t-distribution must be used to obtain the critical value.
(c) the resulting margin of error for a confidence interval estimate will tend to be fairly small.
(d) the z distribution must be used to obtain the critical value.
Ā
Ā