Exam 6: Samples and Populations

A frequency distribution of a large number of random sample means which have been Drawn from the same population is called:

The question below refers to the following data: Using t-scores, calculate the 99% confidence interval. (Find the t-values in Table C of Appendix C.)

When increasing our level of confidence from 95% to 99%, the interval:

When increasing the level of confidence from 95% to 99%, we:

A sample is usually:

The question below refers to the following situation: Given the following raw scores on a standard 10-point scale of student satisfaction: Estimate the standard error of the mean.

What is the standard error of the mean when analyzing the IQs of 25 adults, given that the population standard deviation of adult IQ is 10?

The difference between the sample mean and the population mean is called:

The social researcher taking a random sample usually uses:

The question below refers to the following situation: Given the following raw scores on a standard 10-point scale of student satisfaction: Calculate the 99% confidence interval (use the t-score method; you can find t-values in Table C of Appendix C):

h a standard deviation of .3. Without using t-scores, calculate the 99% confidence interval.

The question below refers to the following situation: A researcher interested in school violence investigates the extent to which conflict occurs in schools. She obtains a weekly count of witnessed arguments from 15 students. The data are as follows: The 95% confidence interval with 14 degrees of freedom is 2.145 according to the t Table. Therefore, the values of this confidence interval are __________.

Compared with the 95% confidence interval, the 99% confidence interval is more narrow.

Regardless of how well the sampling plan has been designed, with the researcher's best Intentions, no cheating, and no mistakes, a difference between the sample mean and the Population mean known as ______ will almost always be present.

The question below refers to the following situation: Given the following raw scores on a standard 10-point scale of student satisfaction: Calculate the 95% confidence interval (use the t-score method; you can find t-values in Table C of Appendix C):

The mean of a sampling distribution of means is:

Which of the following is true of the sampling distribution of means?

The standard deviation of a sampling distribution of means is:

The following equation is called the __________.

The question below refers to the following situation: A random sample of 175 people surveyed were asked whether or not they always stop completely at stop signs. Seventy-five percent responded that they do not. Estimate the population proportion with a 95% confidence interval.