ALEC 695- Quiz 11: Inferential

The standard error of the mean refers to miscalculating the standard deviation of a sampling distribution of means

• True

• False

Establishing a 95% confidence interval enables a researcher to:

• state the values that encompass all but 95% of the sample scores

• state the values that encompass 95% of the sample scores

• state the values that encompass 95% of the population parameters

• state the values that encompass the population parameters in 95% of such instances

If the null hypothesis is rejected:

• the research hypothesis is accepted

• the research hypothesis is rejected

• the research results cannot be interpreted

• the research hypothesis is proven

Calculation of the contingency coefficient requires:

• calculation of Chi-Square

• calculation of the standard deviation

• calculation of the median

• calculation of the standard error of the mean

Which following term or terms best associate(s) with relative occurrence?

• Inferential statistics

• Descriptive statistics

• Probability

• Confidence intervals

• Parametric statistical test

Sampling error refers to the difference between a sample and its population.

• True

• False

The purpose of a confidence interval is to:

• determine whether a relationship is of practical importance

• assess the validity of scores

• determine the range of sample scores

• establish boundaries of population parameters

Which of the following inference tests is appropriate for a comparison of means in an experiment in which each subject receives both treatments?

• The Mann-Whitney U test

• Chi-Square

• A t test for correlated means

• A t test for independent means

A sample of 13 children has a mean IQ of 112 and a standard deviation of 15. Is it likely that this could be a random sample from a population whose mean is known to be 113.5?

• Yes, it is likely that a random sample mean could deviate that much from a population mean.

• No, a random sample mean could not deviate that much from a population mean.

• No, the calculations are incorrect.

• The question cannot be answered on the basis of the information given.

A hypothesis which states that the experimental group mean will be higher than the control group mean should:

• not use a test of statistical significance

• use a one-tailed test of statistical significance

• use a two-tailed test of statistical significance

• use a Chi-Square test