The business analyst for Ace Business Machines,Inc.wants to forecast this year's demand for manual typewriters based on the following historical data: 
What is the forecast for this year using a three-year weighted moving average with weights of .5,.3,and .2?
Definitions:
Analytical Comparison
The process of examining and evaluating similarities and differences between entities or datasets using analytical methods.
Familywise Error
Familywise error rate is the probability of making one or more false discoveries, or type I errors, when performing multiple hypotheses tests.
Type I Error
The incorrect rejection of a true null hypothesis, also known as a false positive.
Probability
A measure of the likelihood of a specific event occurring, expressed as a number between 0 and 1.
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