Question: F I L E Use the data from the preceding question for the share of total shipment of music that falls in the category of

F I L E Use the data from the preceding question for the share of total shipment of music that falls in the category of rock music from 1990–2008.

a. Make a forecast for the share of rock music in 2009 using the exponential smoothing method with α = 0.4.

b. Make a forecast for the share of rock music in 2009 using the exponential smoothing method with α = 0.6.

c. Use the MSE to pick the appropriate speed of decline for making a forecast for the share of rock music in 2009.

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