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2) A researcher has conducted a study to examine the effects of caffeine on test scores in statistics. Twelve students were given caffeine, and 12 other students received a placebo pill. The following results were obtained: Caffeine Group: Mean test score in statistics = 8.6, s = 1, n = 12 Control (placebo) Group: Mean test score in statistics = 6.1, s=1.1, n = 12 We will use a = .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 Reject H. State the conclusions of the study. If any differences were found, be sure to discuss the specifics of the

2) A researcher has conducted a study to examine the effects of caffeine on test scores in statistics. Twelve students were given caffeine, and 12 other students received a placebo pill. The following results were obtained: Caffeine Group: Mean test score in statistics = 8.6, s = 1, n = 12 Control (placebo) Group: Mean test score in statistics = 6.1, s=1.1, n = 12 We will use a = .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 Reject H. State the conclusions of the study. If any differences were found, be sure to discuss the specifics of the

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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2) A researcher has conducted a study to examine the effects of caffeine on test scores in statistics. Twelve students were given caffeine, and 12 other students received a placebo pill. The following results were obtained: Caffeine Group: Mean test score in statistics = 8.6, s = 1, n = 12 Control (placebo) Group: Mean test score in statistics = 6.1, s=1.1, n = 12 We will use a = .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 Reject H. State the conclusions of the study. If any differences were found, be sure to discuss the specifics of the
Transcribed Image Text:2) A researcher has conducted a study to examine the effects of caffeine on test scores in statistics. Twelve students were given caffeine, and 12 other students received a placebo pill. The following results were obtained: Caffeine Group: Mean test score in statistics = 8.6, s = 1, n = 12 Control (placebo) Group: Mean test score in statistics = 6.1, s=1.1, n = 12 We will use a = .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 Reject H. State the conclusions of the study. If any differences were found, be sure to discuss the specifics of the
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