Homework SourseTwo separate samples are being used to estimate the populati
Two separate samples are being used to estimate the population mean difference between two treatment conditions. Which of the following would produce the widest confidence interval?
n1 = n2 = 20 with a pooled variance of 100
n1 = n2 = 10 with a pooled variance of 100
n1 = n2 = 10 with a pooled variance of 10
n1 = n2 = 20 with a pooled variance of 10
| a. | n1 = n2 = 20 with a pooled variance of 100 | |
| b. | n1 = n2 = 10 with a pooled variance of 100 | |
| c. | n1 = n2 = 10 with a pooled variance of 10 | |
| d. | n1 = n2 = 20 with a pooled variance of 10 |
Solution
Answer: b. n1 = n2 = 10 with a pooled variance of 100
