MULTIPLE CHOICE QUESTIONS A confidence interval for the di

. MULTIPLE CHOICE QUESTIONS

. A confidence interval for the difference between two population means ranges from -15 to +20. a. You should not conclude that there is a difference in the two population means. b. You should conclude that there is a difference between the two population means. c. The sample size was too small, since the interval has one negative and one positive limit. d. An error must have been made when the limits were calculated.

Solution

MULTIPLE CHOICE QUESTIONS

. A confidence interval for the difference between two population means ranges from -15 to +20.

a. You should not conclude that there is a difference in the two population means.

b. You should conclude that there is a difference between the two population means.

c. The sample size was too small, since the interval has one negative and one positive limit.

d. An error must have been made when the limits were calculated.

Answer a.

Since the confidence interval contains 0 value, there is no significant difference between the two population means.