Question

# 1.- A researcher obtains t = 2.25 for a repeated-measures study using a sample of n...

1.- A researcher obtains t = 2.25 for a repeated-measures study using a sample of n = 10 participants. Based on this t value, what is the correct decision for a two-tailed test?

2.- Compute the Pearson correlation ( r ) for the following data.
X 2 3 6 4
Y 3 1 5 4

a. SSX = 15, SSY = 15, SP = 10, r = 0.400
b. SSX = 10, SSY = 10, SP = 5, r = 0.500
c. SSX = 20, SSY = 20, SP = 5, r = 0.800

3.- A researcher obtains t = 2.25 for a repeated-measures study using a sample of n = 10 participants. Based on this t value, what is the correct decision for a two-tailed test?
a. Reject the null hypothesis with α = .05 but not with α = .01
b. Reject the null hypothesis with both α = .05 and α = .01
c. Fail to reject the null hypothesis with both α = .05 and α = .01
d. Cannot make a decision without additional information

4.- What value is estimated with a confidence interval using the t statistic?​ Thank you ?

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