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In a classic study of procrastination by Lay (1986), in an introductory psychology class, students received a survey that measured procrastination. Participants were instructed to complete the survey and return it to the researcher by mail. High-procrastinating partici- pants were identified by their degree of agreement with survey items like, “I often find myself performing tasks that I had intended to do days before." Interest- ingly, the researcher also measured the amount of time that it took for participants to return the survey. The following represents the number of days that some of the high procrastinators waited to return the survey: 14 15 5 2 1 2 19 6 18 = .05 to test the hypoth- a. Use a one-tailed test with oa: esis that high procrastinators waited more than one day to return the survey. b. Compute the 95% confidence interval for the mean amount of time required to return the survey. c. Write a sentence showing the outcome of the hypoth- esis test and the confidence interval as it would appear in a research report.

In a classic study of procrastination by Lay (1986), in an introductory psychology class, students received a survey that measured procrastination. Participants were instructed to complete the survey and return it to the researcher by mail. High-procrastinating partici- pants were identified by their degree of agreement with survey items like, “I often find myself performing tasks that I had intended to do days before." Interest- ingly, the researcher also measured the amount of time that it took for participants to return the survey. The following represents the number of days that some of the high procrastinators waited to return the survey: 14 15 5 2 1 2 19 6 18 = .05 to test the hypoth- a. Use a one-tailed test with oa: esis that high procrastinators waited more than one day to return the survey. b. Compute the 95% confidence interval for the mean amount of time required to return the survey. c. Write a sentence showing the outcome of the hypoth- esis test and the confidence interval as it would appear in a research report.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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21. In a classic study of procrastination by Lay (1986), in an introductory psychology class, students received a survey that measured procrastination. Participants were instructed to complete the survey and return it to the researcher by mail. High-procrastinating partici- pants were identified by their degree of agreement with survey items like, “I often find myself performing tasks that I had intended to do days before." Interest- ingly, the researcher also measured the amount of time that it took for participants to return the survey. The following represents the number of days that some of the high procrastinators waited to return the survey: 14 15 5 2 1 2 19 6 18 a. Use a one-tailed test with a = .05 to test the hypoth- esis that high procrastinators waited more than one day to return the survey. b. Compute the 95% confidence interval for the mean amount of time required to return the survey. c. Write a sentence showing the outcome of the hypoth- esis test and the confidence interval as it would appear in a research report.
Transcribed Image Text:21. In a classic study of procrastination by Lay (1986), in an introductory psychology class, students received a survey that measured procrastination. Participants were instructed to complete the survey and return it to the researcher by mail. High-procrastinating partici- pants were identified by their degree of agreement with survey items like, “I often find myself performing tasks that I had intended to do days before." Interest- ingly, the researcher also measured the amount of time that it took for participants to return the survey. The following represents the number of days that some of the high procrastinators waited to return the survey: 14 15 5 2 1 2 19 6 18 a. Use a one-tailed test with a = .05 to test the hypoth- esis that high procrastinators waited more than one day to return the survey. b. Compute the 95% confidence interval for the mean amount of time required to return the survey. c. Write a sentence showing the outcome of the hypoth- esis test and the confidence interval as it would appear in a research report.
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