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I 3. a. N= Group 1 (Pre-Ultima) b. Mean₁= 60 45 45 68 62 70 59 60 44 47 Group 2 (Post-Ultima) *thousandths 45 29 44 21 46 65 29 1. Using Statcrunch, calculate the following statistics for each group. Notice how these can go directly into the formula in #2 and #4. 54 36 29 (whole numbers) Mean₂= 2. Calculate Standard Deviation of the Distribution of before and after difference scores (think of formula): (tenths place) *hundredths Calculate Standard Error of the Difference Between Means = *Make sure you enter your numbers into the t ratio formula as they were listed above.

I 3. a. N= Group 1 (Pre-Ultima) b. Mean₁= 60 45 45 68 62 70 59 60 44 47 Group 2 (Post-Ultima) *thousandths 45 29 44 21 46 65 29 1. Using Statcrunch, calculate the following statistics for each group. Notice how these can go directly into the formula in #2 and #4. 54 36 29 (whole numbers) Mean₂= 2. Calculate Standard Deviation of the Distribution of before and after difference scores (think of formula): (tenths place) *hundredths Calculate Standard Error of the Difference Between Means = *Make sure you enter your numbers into the t ratio formula as they were listed above.

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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2. I 3. a. N = Group 1 (Pre-Ultima) b. Mean₁. 60 45 45 68 62 70 59 60 44 47 Group 2 (Post-Ultima) *thousandths 45 29 44 21 46 1. Using Statcrunch, calculate the following statistics for each group. Notice how these can go directly into the formula in #2 and #4. 65 29 54 36 29 (whole numbers) Mean₂= (tenths place) Calculate Standard Deviation of the Distribution of before and after difference scores (think of formula) = *hundredths Calculate Standard Error of the Difference Between Means = *Make sure you enter your numbers into the t ratio formula as they were listed above.
Transcribed Image Text:2. I 3. a. N = Group 1 (Pre-Ultima) b. Mean₁. 60 45 45 68 62 70 59 60 44 47 Group 2 (Post-Ultima) *thousandths 45 29 44 21 46 1. Using Statcrunch, calculate the following statistics for each group. Notice how these can go directly into the formula in #2 and #4. 65 29 54 36 29 (whole numbers) Mean₂= (tenths place) Calculate Standard Deviation of the Distribution of before and after difference scores (think of formula) = *hundredths Calculate Standard Error of the Difference Between Means = *Make sure you enter your numbers into the t ratio formula as they were listed above.
4. 6. Calculate the t ratio = 5. Should we use a one-tailed test or a two-tailed test? 7. *thousandths What is the critical t (according to Critical Values Table)? I Based on the data, can you reject the null hypothesis (Ho)? One tailed 8. Use Statcrunch to find the (unadjusted) variance for each group. Two-tailed *thousandths Yes No S₂²= S₁²= 9. Find Spooled first (at thousandths), then report the effect size (Cohen's d): 10. Based on the critical t and Cohen's d, is Ultima effective at lowering depression? Yes No *thousandths
Transcribed Image Text:4. 6. Calculate the t ratio = 5. Should we use a one-tailed test or a two-tailed test? 7. *thousandths What is the critical t (according to Critical Values Table)? I Based on the data, can you reject the null hypothesis (Ho)? One tailed 8. Use Statcrunch to find the (unadjusted) variance for each group. Two-tailed *thousandths Yes No S₂²= S₁²= 9. Find Spooled first (at thousandths), then report the effect size (Cohen's d): 10. Based on the critical t and Cohen's d, is Ultima effective at lowering depression? Yes No *thousandths
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