Matched Pairs Interval

Which test or interval would be appropriate for this scenario?

• One-Proportion Z-Test/Interval

• Two-Proportion Z-Test/Interval

• One-Sample t-Test/Interval

• Matched-Pairs t-Test/Interval

• Two-Sample t-Test/Interval

Which test or interval would be appropriate for this scenario?

• One-Proportion Z-Test/Interval

• Two-Proportion Z-Test/Interval

• One-Sample t-Test/Interval

• Matched-Pairs t-Test/Interval

• Two-Sample t-Test/Interval

Which test or interval would be appropriate for this scenario?

• One-Proportion Z-Test/Interval

• Two-Proportion Z-Test/Interval

• One-Sample t-Test/Interval

• Matched-Pairs t-Test/Interval

• Two-Sample t-Test/Interval

Which test or interval would be appropriate for this scenario?

• One-Proportion Z-Test/Interval

• Two-Proportion Z-Test/Interval

• One-Sample t-Test/Interval

• Matched-Pairs t-Test/Interval

• Two-Sample t-Test/Interval

Look at the picture. Select the correct interval notation for the given number line.

• (-∞, -8) U (-4, ∞)

• (-∞, -8] U [-4, ∞)

• (-8, -4)

• [-8, -4]

Given an SRS of 25 males SAT scores (Math and Verbal), is there evidence that males score higher on the Math SAT than on the Verbal SAT?

• Two-Sample t-Test

• One-Sample t-Test on Matched Pairs

• One-Sample t-Interval on Matched Pairs

• Two-Proportion z-Test

A travel company is investigating whether the average cost of a hotel stay in a certain city has increased over the past year. The company recorded the cost of a one-night stay for a Friday night in January of the current year and in the previous year for 31 hotels selected at random. The difference in cost (current year minus previous year) was calculated for each hotel. Which of the following is the appropriate test for the company’s investigation?

• 1 sample t interval

• 1 sample t test

• 2 sample t interval

• 2 sample t test

• Matched Pairs analysis

To study the effectiveness of a certain adult reading program, researchers will select a random sample of adults who are eligible for the program. The selected adults will be given a pretest before beginning the program and a posttest after completing the program. The difference in the number of correct answers on the pretest and the number of correct answers on the posttest will be recorded for each adult in the sample. Which of the following is the most appropriate inference procedure for the researchers to use to analyze the results?

• 1 sample t interval

• 1 sample t test

• 2 sample t interval

• 2 sample t test

• Matched Pairs analysis

A sociologist studying the difference in ages between husbands and wives obtained a random sample of 55 married couples. The mean of the husbands’ ages was 38.5 years with standard deviation 12.6 years. The mean of the wives’ ages was 36.9 years with standard deviation 12.4 years. The sociologist calculated the difference between the ages for each couple. The mean difference was 1.6 years with standard deviation 2.1 years.

• sample t interval

• sample t test

• sample t interval

• sample t test

• Matched Pairs analysis

A team of psychologists studied the effect of multitasking on the completion of cognitive tasks. A group of 40 women participated in the study. Each woman owned a smartphone equipped with the same type of keyboard. The women typed a text passage on the phone twice, one time while sitting in a quiet room (a single task) and the other time while walking (a multitask). The order of the single task and the multitask was randomly determined for each woman. The psychologists recorded the time it took each woman to type the text for both tasks. If the conditions of inference are met, which of the following tests is most appropriate to analyze the data?

• A two-sample t-test for a difference between means

• A matched-pairs t-test for a mean difference

• A one-sample z-test for a proportion

• A two-sample z-test for a difference between proportions

• A chi-square test of independence