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Use the following information to answer A researcher wants to investigate whether older drivers' break response times differ from younger drivers. He obtains a sample of 12 older drivers and finds that they have an average break response time of 5 seconds and a sum of squares of 25. The researcher also measures an average break response time of 2.5 seconds for 7 younger drivers with a sum of squares of 20. Conduct the appropriate t test with an alpha of .05. Which of the following is the correct alternative hypothesis? (Do not let your assumptions about drivers influence your answer. Only use information given in the problem to answer this question.) O POlder Divers="Younger Divers O POlder Divers > Younger Divers POlder Drivers * Younger Drivers O POlder Divers < "Younger Divers Which critical t value marks the boundaries of the critical region? O £2.110 O-1.740 O 2.093 O +1.740 Compute the pooled variance. ○ 2.65 O O O 23.16 2.36 O 10.24 Compute the standard error of the difference. O 0.77 Compute the t statistic. 0.60 O 0.94 O 3.23 O 4.18 2.22 O 0.53 2.44 Compute the proportion of variance explained by the dependent measure (r2). O 0.16 O 0.11 0000 O 0.06 O 0.38 What is the correct decision? O Reject the alternative hypothesis O Reject the null hypothesis O Fail to reject the null hypothesis Appont the pull hupothonin Compute the 95% confidence interval. O 1.15,3.85 O 1.46, 3.54 O 0.88, 4.12 O 0.00, 4.99 Compute the estimated Cohen's d. O 3.23 O 1.54 O 2.84 O 0.94

Use the following information to answer A researcher wants to investigate whether older drivers' break response times differ from younger drivers. He obtains a sample of 12 older drivers and finds that they have an average break response time of 5 seconds and a sum of squares of 25. The researcher also measures an average break response time of 2.5 seconds for 7 younger drivers with a sum of squares of 20. Conduct the appropriate t test with an alpha of .05. Which of the following is the correct alternative hypothesis? (Do not let your assumptions about drivers influence your answer. Only use information given in the problem to answer this question.) O POlder Divers="Younger Divers O POlder Divers > Younger Divers POlder Drivers * Younger Drivers O POlder Divers < "Younger Divers Which critical t value marks the boundaries of the critical region? O £2.110 O-1.740 O 2.093 O +1.740 Compute the pooled variance. ○ 2.65 O O O 23.16 2.36 O 10.24 Compute the standard error of the difference. O 0.77 Compute the t statistic. 0.60 O 0.94 O 3.23 O 4.18 2.22 O 0.53 2.44 Compute the proportion of variance explained by the dependent measure (r2). O 0.16 O 0.11 0000 O 0.06 O 0.38 What is the correct decision? O Reject the alternative hypothesis O Reject the null hypothesis O Fail to reject the null hypothesis Appont the pull hupothonin Compute the 95% confidence interval. O 1.15,3.85 O 1.46, 3.54 O 0.88, 4.12 O 0.00, 4.99 Compute the estimated Cohen's d. O 3.23 O 1.54 O 2.84 O 0.94

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Use the following information to answer A researcher wants to investigate whether older drivers' break response times differ from younger drivers. He obtains a sample of 12 older drivers and finds that they have an average break response time of 5 seconds and a sum of squares of 25. The researcher also measures an average break response time of 2.5 seconds for 7 younger drivers with a sum of squares of 20. Conduct the appropriate t test with an alpha of .05. Which of the following is the correct alternative hypothesis? (Do not let your assumptions about drivers influence your answer. Only use information given in the problem to answer this question.) O HOlder Divers = μYounger Divers O HOlder Divers Younger Divers O HOlder Drivers Younger Drivers O POlder Divers < "Younger Divers Which critical t value marks the boundaries of the critical region? O +2.110 O -1.740 O2.093 O +1.740 Compute the pooled variance. O 2.65 0000 O 23.16 O 2.36 O 10.24 Compute the standard error of the difference. Compute the t statistic. O 0.94 3.23 O4.18 O 2.11 O 0.77 O 0.60 O O O 2.22 O 0.53 Compute the proportion of variance explained by the dependent measure (r²). O 0.16 O 0.11 O 0.06 O 0.38 What is the correct decision? O Reject the alternative hypothesis O Reject the null hypothesis O Fail to reject the null hypothesis O Accept the null hypothesis Compute the 95% confidence interval. O 1.15,3.85 O 1.46, 3.54 O 0.88, 4.12 O 0.00, 4.99 Compute the estimated Cohen's d. O 3.23 O 1.54 O 2.84 O 0.94 000
Transcribed Image Text:Use the following information to answer A researcher wants to investigate whether older drivers' break response times differ from younger drivers. He obtains a sample of 12 older drivers and finds that they have an average break response time of 5 seconds and a sum of squares of 25. The researcher also measures an average break response time of 2.5 seconds for 7 younger drivers with a sum of squares of 20. Conduct the appropriate t test with an alpha of .05. Which of the following is the correct alternative hypothesis? (Do not let your assumptions about drivers influence your answer. Only use information given in the problem to answer this question.) O HOlder Divers = μYounger Divers O HOlder Divers Younger Divers O HOlder Drivers Younger Drivers O POlder Divers < "Younger Divers Which critical t value marks the boundaries of the critical region? O +2.110 O -1.740 O2.093 O +1.740 Compute the pooled variance. O 2.65 0000 O 23.16 O 2.36 O 10.24 Compute the standard error of the difference. Compute the t statistic. O 0.94 3.23 O4.18 O 2.11 O 0.77 O 0.60 O O O 2.22 O 0.53 Compute the proportion of variance explained by the dependent measure (r²). O 0.16 O 0.11 O 0.06 O 0.38 What is the correct decision? O Reject the alternative hypothesis O Reject the null hypothesis O Fail to reject the null hypothesis O Accept the null hypothesis Compute the 95% confidence interval. O 1.15,3.85 O 1.46, 3.54 O 0.88, 4.12 O 0.00, 4.99 Compute the estimated Cohen's d. O 3.23 O 1.54 O 2.84 O 0.94 000
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