Multiple Choice
Which of the following statements is true if a study measures two groups on each of 27 variables,and the experimenter carries out a t test for independent means for each variable (that is,27 t tests) using the .05 significance level?
A) If any of the t tests are significant,there is clearly a difference between groups on all variables at the overall .05 level.
B) It is not proper to carry out any t tests in this situation.
C) The chance of a Type II error is high.
D) The chance of at least one t test being significant is greater than 5%.
Correct Answer:
Verified
Correct Answer:
Verified
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