Author Question: The t-test for the difference between the means of two independent populations assumes that the ... (Read 140 times)

Bob-Dole · **on:** Jun 24, 2018

The t-test for the difference between the means of two independent populations assumes that the respective:
a. sample sizes are equal. c. means are equal.
b. populations are normal. d. All of these choices are true.

Question 2

In exponentially smoothed time series, the smoothing constant w is chosen on the basis of how much smoothing is required. In general, a small value of w such as 0.1 results in very little smoothing, while a large value of w such as 0.8 results in too much smoothing.
Indicate whether the statement is true or false