# 20. The following data summarize the results from anindependent-measures study comparing three treat-ment conditions.M = 2M = 3M = 4n = 10n = 10n = 10T = 30T = 20T = 40s2 = 2.67s2 = 1.33s? = 2.00a. Use an ANOVA with a = .05 to determinewhether there are any significant differencesamong the three treatment means. Note: Becausethe samples are all the same size, MSaverage of the three sample variances.b. Calculate n? to measure the effect size for thisstudy.is thewithin 18. The following data were obtained from an inde-pendent-measures study comparing three treatmentconditions.TreatmentIIII38.N = 12G = 48EX = 23836.46.M = 4M = 2M = 6T = 8T = 24T = 16SS = 2SS = 8SS = 421a. Calculate the sample variance for each of the threesamples.b. Use an ANOVA with a = .05 to determinewhether there are any significant differencesamong the three treatment means.

Question
1449 views help_outlineImage Transcriptionclose20. The following data summarize the results from an independent-measures study comparing three treat- ment conditions. M = 2 M = 3 M = 4 n = 10 n = 10 n = 10 T = 30 T = 20 T = 40 s2 = 2.67 s2 = 1.33 s? = 2.00 a. Use an ANOVA with a = .05 to determine whether there are any significant differences among the three treatment means. Note: Because the samples are all the same size, MS average of the three sample variances. b. Calculate n? to measure the effect size for this study. is the within fullscreen help_outlineImage Transcriptionclose18. The following data were obtained from an inde- pendent-measures study comparing three treatment conditions. Treatment II II 3 8. N = 12 G = 48 EX = 238 3 6. 4 6. M = 4 M = 2 M = 6 T = 8 T = 24 T = 16 SS = 2 SS = 8 SS = 4 21 a. Calculate the sample variance for each of the three samples. b. Use an ANOVA with a = .05 to determine whether there are any significant differences among the three treatment means. fullscreen
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Step 1

a)

The null and alternative hypotheses are shown below:

Step 2

The level of the significance is 0.05.

The critical region is obtained as shown below:

Step 3

Critical value for (2, 27) with the level of significance 0.05 ...

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