CPMP, again. During the study described in Exercise 25, students in both CPMP and traditional classes took another algebra test that did not allow them to use calculators.

The table shows the results. Are the mean scores of the two groups significantly different? Assume that the assumptions for inference are satisfied.

Math Program n Mean SD CPMP 312 29.0 18.8 Traditional 265 38.4 16.2

a) Write an appropriate hypothesis.

b) Here is computer output for this hypothesis test. Explain what the P-value means in this context.
2-Sample t-Test of m1 - m2  0 t-Statistic = -6.451 w/574.8761 df P 6 0.0001

c) State a conclusion about the CPMP program.