95 percent of the observations under the normal curve fall within ________ times the sample error.
a. ±1.64
b. ±1.96
c. ±2.58
d. ±95
e. ±1.95
Answer: b. ±1.96
95 percent of the observations under the normal curve fall within ________ times the sample error.
a. ±1.64
b. ±1.96
c. ±2.58
d. ±95
e. ±1.95
Answer: b. ±1.96