* A researcher would like to test a hypothesis at the 0.05 level of significance that boys raise their hands in class more often than girls. Group statistics is presented below. What is your
conclusion regarding the research hypothesis? Remember to first decide whether this is a one-
or two-tailed test. (from the text p. 210)

Gender : boys girls
Sample size 14 16
Mean 7.93 5.31
Standard deviation 2.37 2.39
a. State the research and null hypotheses as sentences and in notation. (2 points)
b. What is the critical value? (2 points)
c. Calculate the test statistic. (3 points)