Author Question: If a smoothing model is applied with a smoothing constant exceeding 0.50, the forecasting bias will ... (Read 135 times)

cabate · **on:** Jun 24, 2018

If a smoothing model is applied with a smoothing constant exceeding 0.50, the forecasting bias will tend to be positive in most cases.

Indicate whether the statement is true or false

Question 2

A recent study of 15 shoppers showed that the correlation between the time spent in the store and the dollars spent was 0.235.

Using a significance level equal to 0.05, which of the following is the appropriate null hypothesis to test whether the population correlation is zero?
A) H0 : r = 0.0
B) H0 : = 0.0
C) H0 : = 0.0
D) H0 : 0