Correlation cannot be used to test associations between two dichotomous variables. (True or false?)

Correlation cannot be used to test associations between two dichotomous variables.
 
  Indicate whether the statement is true or false

Question 2

When testing a hypothesis, we normally retain the null hypothesis when the test statistic is smaller than the critical value.
 
  Indicate whether the statement is true or false

Question 3

When the direction of difference between the sample mean and the population mean is not specified, a two-tailed test is appropriate.
 
  Indicate whether the statement is true or false

Question 4

If the alternative hypothesis in a study is H0 > 0, a one-tailed test is called for.
 
  Indicate whether the statement is true or false

Question 5

If .05 is the rejection level, we would reject the null hypothesis if the probability of the test statistic, given that the null hypothesis is true, was .07
 
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