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Related-Samples T-Test Mean Pair 1 Before After-4.50000 Std. Deviation 3.20936 c. Now look at the p-value. Paired Samples Test Paired Differences Std. Error Mean 1.31022 95% Confidence Interval of the Difference Lower -7.86802 Upper t -1.13198 -3.435 5 Sig (2-tailed) 019 2. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. a. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval?_ b. Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha- .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Based on the p-value, do you Reject HO? Yes or No: Do your C.I. and p-value answers match? (If they don't match, you've made a mistake in interpeting p-values, C.I.'s, or both. Figure out how to fix it before the exam!)

Related-Samples T-Test Mean Pair 1 Before After-4.50000 Std. Deviation 3.20936 c. Now look at the p-value. Paired Samples Test Paired Differences Std. Error Mean 1.31022 95% Confidence Interval of the Difference Lower -7.86802 Upper t -1.13198 -3.435 5 Sig (2-tailed) 019 2. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. a. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval?_ b. Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha- .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Based on the p-value, do you Reject HO? Yes or No: Do your C.I. and p-value answers match? (If they don't match, you've made a mistake in interpeting p-values, C.I.'s, or both. Figure out how to fix it before the exam!)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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a. b. Related-Samples T-Test a. Pair 1 Before - After a. Mean 1.25000 Mean Std Deviation 1.90863 Pair 1 Before After 1.25000 Pair 1 Before After - Std. Deviation 1.90863 Related-Samples T-Test 3. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval? Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha = .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Related-Samples T-Test Mean 1.75000 Paired Differences Paired Samples Test Std. Error Mean 67480 Paired Samples Test Paired Differences Std. Error Mean Std. Deviation 1.75255 67480 Difference 95% Confidence interval of the Lower -34565 95% Confidence Interval of the Lower Std. Error Mean Upper 2.84565 4. Now view the same Related-Samples SPSS output, but this time with the p-value included. Based on the p-value, and assuming you are doing a two-tailed hypothesis test with a = .05, should you Reject Ho? Reject Ho? Yes or No: b. On the last question you made a prediction (based on the 95% C.I.) about whether the two-tailed hypothesis test with a = .05 would reject H0 or not. Was your prediction correct? (If not make sure you understand why!) Prediction correct? Yes or No: (If not, figure out your mistake before the exam!) Paired Differences .61962 Paired Samples Test -.34565 Difference 1.852 Lower Upper 2.84565 Difference df 28483 7 95% Confidence Interval of the Sig. (2-tailed) 106 Upper 3.21517 5. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval?_ b. Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha= .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No:
Transcribed Image Text:a. b. Related-Samples T-Test a. Pair 1 Before - After a. Mean 1.25000 Mean Std Deviation 1.90863 Pair 1 Before After 1.25000 Pair 1 Before After - Std. Deviation 1.90863 Related-Samples T-Test 3. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval? Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha = .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Related-Samples T-Test Mean 1.75000 Paired Differences Paired Samples Test Std. Error Mean 67480 Paired Samples Test Paired Differences Std. Error Mean Std. Deviation 1.75255 67480 Difference 95% Confidence interval of the Lower -34565 95% Confidence Interval of the Lower Std. Error Mean Upper 2.84565 4. Now view the same Related-Samples SPSS output, but this time with the p-value included. Based on the p-value, and assuming you are doing a two-tailed hypothesis test with a = .05, should you Reject Ho? Reject Ho? Yes or No: b. On the last question you made a prediction (based on the 95% C.I.) about whether the two-tailed hypothesis test with a = .05 would reject H0 or not. Was your prediction correct? (If not make sure you understand why!) Prediction correct? Yes or No: (If not, figure out your mistake before the exam!) Paired Differences .61962 Paired Samples Test -.34565 Difference 1.852 Lower Upper 2.84565 Difference df 28483 7 95% Confidence Interval of the Sig. (2-tailed) 106 Upper 3.21517 5. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval?_ b. Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha= .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No:
a. b. C. a. Related-Samples T-Test b. Mean Std. Deviation 4.41210 C. Pair 1 Before After -3.66667 Now look at the p-value. Paired Samples Test Mean Pair 1 Before After -4.50000 Paired Differences 1. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval? Std. Error Mean 1.80123 Std. Deviation 3.20936 Now look at the p-value. 95% Confidence Interval of the Difference Lower -8.29689 Std. Error Meani Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha= .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Paired Samples Test Paired Differences 1.31022 Upper Based on the p-value, do you Reject H0? Yes or No: Do your C.I. and p-value answers match? (If they don't match, you've made a mistake in interpreting p-values, C.I.'s, or both. Figure out how to fix it before the exam!) Related-Samples T-Test .96355 Lower -7.86802 t -2.036 95% Confidence Interval of the Difference Upper -1.13198 df t -3.435 5 df 5 2. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval?_ Sig. (2-tailed) 097 Sig. (2-tailed) 019 Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha= .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Based on the p-value, do you Reject H0? Yes or No: Do your C.I. and p-value answers match? (If they don't match, you've made a mistake in interpeting p-values, C.I.'s, or both. Figure out how to fix it before the exam!)
Transcribed Image Text:a. b. C. a. Related-Samples T-Test b. Mean Std. Deviation 4.41210 C. Pair 1 Before After -3.66667 Now look at the p-value. Paired Samples Test Mean Pair 1 Before After -4.50000 Paired Differences 1. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval? Std. Error Mean 1.80123 Std. Deviation 3.20936 Now look at the p-value. 95% Confidence Interval of the Difference Lower -8.29689 Std. Error Meani Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha= .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Paired Samples Test Paired Differences 1.31022 Upper Based on the p-value, do you Reject H0? Yes or No: Do your C.I. and p-value answers match? (If they don't match, you've made a mistake in interpreting p-values, C.I.'s, or both. Figure out how to fix it before the exam!) Related-Samples T-Test .96355 Lower -7.86802 t -2.036 95% Confidence Interval of the Difference Upper -1.13198 df t -3.435 5 df 5 2. Look at the above Related-Samples t-Test SPSS output and use it to answer the following questions. Recall that we have always used a test value of zero for the Related-Samples t-test. Therefore, compare that test value with the 95% C.I. given on the SPSS output. Is that test value inside the interval or outside the interval? Inside or Outside interval?_ Sig. (2-tailed) 097 Sig. (2-tailed) 019 Based your answer to part (a), do you think that a two-tailed hypothesis test using alpha= .05 would Reject Ho? (No credit unless your answer is consistent with your answer to part a). Would a two-tailed, a = .05 hypothesis test Reject Ho? Yes or No: Based on the p-value, do you Reject H0? Yes or No: Do your C.I. and p-value answers match? (If they don't match, you've made a mistake in interpeting p-values, C.I.'s, or both. Figure out how to fix it before the exam!)
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