3. (6 pts) A 95% confidence interval on M1 - M2 equal to (-2.0, -0.5) was computed from a CRD with a=2. Circle those statements below which MUST be true. a. The test for equality of M1 with 2 was rejected at the alpha=0.05 level b. M1 - M2# 0 c. (-2.0, -0.5) covers M1 - M2 95% of the time d. the estimate of M1 - M2 is equal to -1.25 e. the width of a 90% confidence interval on M1 - 2 is less than 1.5