In: Statistics and Probability
5. Use a=0.05 to test the following time series for positive autocorrelation.
Period   Sales
1   4
2   7
3   11
4   10
5   10
6   11
7   14
8   16
9   12
10   13
11   19
12   12
13   14
14   16
15   15
a. Determine the Durbin-Watson statistic. (Round to two decimal places as needed.)
b. Identify the critical values. dL=? dU=?(Round to two decimal places as needed.)


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