Question: Richard Jackson developed an ergonomically superior computer mouse in 1989, and sales have been increasing ever since. Data are presented below in terms of thousands

Richard Jackson developed an ergonomically superior computer mouse in 1989, and sales

have been increasing ever since. Data are presented below in terms of thousands of mice sold

per year.

Year

1989

1990

1991

1992

1993

1994

1995

1996

Number sold

82.4

125.7

276.9

342.5

543.6

691.5

782.4

889.5

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(a)

Develop a linear estimating equation that best describes these data.

(b)

Develop a second-degree estimating equation that best describes these data.

(c)

Estimate the number of mice that will be sold in 1998, using both equations.

(d)

If we assume the rate of increase in mouse sales will decrease soon based on supply and

demand, which model would be a better predictor for your answer in part (c)?

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