Question

Conduct an independent samples t-test (a.k.a., between-subjects design). Each sample should have at least n=8 individuals. What to turn in: 1. What is your research question? 2. State the null (Ho) and alternative (H1) hypotheses. 3. Conduct the hypothesis test using an alpha level of .05, and state your conclusion (Reject Ho/Fail to Reject Ho) regarding the original hypotheses. 4. Calculate and interpret a measure of effect size (est. Cohen's d or r2) and a 95% confidence interval.

Data

Answer 1

Here we can use paired sample t-test paired sample t-test is used to compare the mean between two . selated groups of samples... In this case you have a values for the sample. paired totest analysis is performed as follows Al. Calculate or difference d . between each pair of value -2. Compute the mean & standard deviation (s) of d b. Compare the average - difference to zero. It there is significant difference between two pairs of samples i

then the is expected mean of a cm). to be tar from Zero, hypothesis So we can define Las; - Ho: M=0 Vs Himzo t-test statistics value can be calculated as; - Under How tom slo where m: The mean difference o The sample size s standard deviation of d. We can compute p-value corresponding to the absolute value of test a statistic (t1) for degrees of freedom (at) dt = ny

Since x=0.05 : After calculating following result we get sto - 27373 dt = 10 pe value = 0.02093 0.05 Conclusion to Since p-value is less than we can say that both the soores are different from each other a satur r2 = 0.5498297 & 95% (.I = –12.038250,-.23447 that. from the there is correlation ne. we say signiticant between a scores.

- The chenis d. is a way of reporting how to groups difter. - Here the value of cohen's d comes out to be 0.82553 ie mean of scores difter by 0.82553 the standard deviation of the data.
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