The following statistics were obtained from independent samples from populations that have normal distributions:

1 2 ni 41 51 –x i 25.4 33.2 si 5.6 7.4

a. Use these statistics to conduct a test of hypothesis if the alternative hypothesis is m1  m2 4. Use a significance level of 0.01.

b. Determine the p-value for the test described in part a.

c. Describe the type of statistical error that could have been made as a result of your hypothesis test.