1) two samples, each with n=9 scores, produce an independent measures t-statistic of t=2

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1) two samples, each with n=9 scores, produce an independent measures t-statistic of t=2.00. if the effect size is measured using r2, what is the value of r2. please show working.

2. the result of an independent measures research study are reported as t(22) =2.12, p < .05, two tails. for this study, what t value formed the boundaries for the critical region

3.a random sample is obtained from a population with S=20 if the sample mean has a standard error of 5points, then the sample size is n=4. true or false

4.A sample with M = 85 and s = 12 is transformed into z-scores. After the transformation, what are the values for the mean and standard deviation for the sample of z-scores?

a.M = 85 and s = 12

b.M = 0 and s = 12

c.M = 85 and s = 1

d.M = 0 and s = 1.