For a chi-square test, the observed frequencies are obtained from the sample. (True or false?)

For a chi-square test, the observed frequencies are obtained from the sample.
 
  Indicate whether the statement is true or false

Question 2

If other factors are held constant, how does sample size influence the likelihood of rejecting the null hypothesis and measures of effect size such as r2 and Cohen's d?
 
  A) A larger sample increases both the likelihood and measures of effect size.
  B) A larger sample increases the likelihood but has little influence on measures of effect size.
  C) A larger sample decreases the likelihood but has little influence on measures of effect size.
  D) A larger sample decreases both the likelihood and measures of effect size.

Question 3

For a chi-square test, the expected frequencies are calculated values that are intended to produce a sample that is representative of the null hypothesis.
 
  Indicate whether the statement is true or false

Question 4

A sample of n = 16 scores produces a t statistic of t = 2.00. If the sample is used to measure effect size with r2, what value will be obtained for r2?
 
  A) r2 = 2/20
  B) r2 = 4/20
  C) r2 = 2/19
  D) r2 = 4/19