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3) A researcher is examining how a sleep medication impacts the number of hours slept per night. She is interested in whether the medication will improve sleep in adults. An experiment is conducted in which 20 adults are selected and given the medication for six months. The number of hours slept per night are recorded at baseline (prior to receiving the drug) and after being on the drug for 6 months (follow-up). The average hours slept per night at baseline was 6.15. The average hours slept per night at follow-up was 7.98. ■D= 1.71 with s² (i.e., the variance) = 15 We will use α = .05, two-tailed test a. What type of t-test you are conducting? b. What is the null hypothesis in scientific/statistical notation? (note: this will be a multiple choice item - you don't have to type the symbols) C. What are the correct degrees of freedom? d. Locate and report the critical t value, using Table e. What is the standard error for the t statistic (i.e., the bottom part of the t formula; remember the formula for calculating this has been provided)?_ f. Compute the t statistic g. What is the decision regarding the null hypothesis? Accept h. State the conclusions of the study. Reject

3) A researcher is examining how a sleep medication impacts the number of hours slept per night. She is interested in whether the medication will improve sleep in adults. An experiment is conducted in which 20 adults are selected and given the medication for six months. The number of hours slept per night are recorded at baseline (prior to receiving the drug) and after being on the drug for 6 months (follow-up). The average hours slept per night at baseline was 6.15. The average hours slept per night at follow-up was 7.98. ■D= 1.71 with s² (i.e., the variance) = 15 We will use α = .05, two-tailed test a. What type of t-test you are conducting? b. What is the null hypothesis in scientific/statistical notation? (note: this will be a multiple choice item - you don't have to type the symbols) C. What are the correct degrees of freedom? d. Locate and report the critical t value, using Table e. What is the standard error for the t statistic (i.e., the bottom part of the t formula; remember the formula for calculating this has been provided)?_ f. Compute the t statistic g. What is the decision regarding the null hypothesis? Accept h. State the conclusions of the study. Reject

Ciccarelli: Psychology_5 (5th Edition)
Ciccarelli: Psychology_5 (5th Edition)
5th Edition
ISBN:9780134477961
Author:Saundra K. Ciccarelli, J. Noland White
Publisher:Saundra K. Ciccarelli, J. Noland White
Chapter1: The Science Of Psychology
Section: Chapter Questions
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3) A researcher is examining how a sleep medication impacts the number of hours slept per night. She is interested in whether the medication will improve sleep in adults. An experiment is conducted in which 20 adults are selected and given the medication for six months. The number of hours slept per night are recorded at baseline (prior to receiving the drug) and after being on the drug for 6 months (follow-up). The average hours slept per night at baseline was 6.15. The average hours slept per night at follow-up was 7.98. ■D= 1.71 with s² (i.e., the variance) = 15 We will use α = .05, two-tailed test a. What type of t-test you are conducting? b. What is the null hypothesis in scientific/statistical notation? (note: this will be a multiple choice item - you don't have to type the symbols) C. What are the correct degrees of freedom? d. Locate and report the critical t value, using Table e. What is the standard error for the t statistic (i.e., the bottom part of the t formula; remember the formula for calculating this has been provided)?_ f. Compute the t statistic g. What is the decision regarding the null hypothesis? Accept h. State the conclusions of the study. Reject
Transcribed Image Text:3) A researcher is examining how a sleep medication impacts the number of hours slept per night. She is interested in whether the medication will improve sleep in adults. An experiment is conducted in which 20 adults are selected and given the medication for six months. The number of hours slept per night are recorded at baseline (prior to receiving the drug) and after being on the drug for 6 months (follow-up). The average hours slept per night at baseline was 6.15. The average hours slept per night at follow-up was 7.98. ■D= 1.71 with s² (i.e., the variance) = 15 We will use α = .05, two-tailed test a. What type of t-test you are conducting? b. What is the null hypothesis in scientific/statistical notation? (note: this will be a multiple choice item - you don't have to type the symbols) C. What are the correct degrees of freedom? d. Locate and report the critical t value, using Table e. What is the standard error for the t statistic (i.e., the bottom part of the t formula; remember the formula for calculating this has been provided)?_ f. Compute the t statistic g. What is the decision regarding the null hypothesis? Accept h. State the conclusions of the study. Reject
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