Question 1
Share prices for a sample of 50 randomly selected U.S. stocks are recorded on April 1, 2001 and then one year later. A statistical test is applied to these data. Fill in the blanks in the output below.

                  N      Mean     StDev   SE Mean
apr2001          50     57.20     27.00      ????
apr2002          50     54.00     25.45      ????
Difference       50      ????      9.81      ????

95% CI for mean difference: (????, ????)
T-Test of mean difference = 0 (vs not = 0): T-Value = ????  P-Value = ????

dhunter@stat.psu.edu