The weekly demand (in cases) for a particular brand of automatic dishwasher detergent for a chain of grocery stores located in Columbus, Ohio, follows.

Week	Demand
1	22
2	18
3	23
4	21
5	17
6	24
7	20
8	19
9	18
10	21

What type of pattern exists in the data?

The time series plot indicates a trend pattern.

The time series plot indicates a seasonal pattern.

The time series plot indicates a cyclical pattern.

The time series plot indicates a horizontal pattern

(c) Use exponential smoothing with a smoothing constant of = 0.9 to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.)

F₁₁ =............ cases

(d) Which of the two methods do you prefer? Why?

The 3-week moving average is preferable since it has a larger MSE compared to exponential smoothing with = 0.9.

Exponential smoothing with = 0.9 is preferable since it has a smaller MSE compared to the 3-week moving average.

Exponential smoothing with = 0.9 is preferable since it has a larger MSE compared to the 3-week moving average.

The 3-week moving average is preferable since it has a smaller MSE compared to exponential smoothing with = 0.9.