Use the sales volume data in Figure 3.22(a) to find (1) A point estimate of and a

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Use the sales volume data in Figure 3.22(a) to find 

(1) A point estimate of and a 95 percent confidence interval for the mean sales volume in all sales regions when advertising expenditure is 10 (that is, $100,000).

(2) A point prediction of and a 95 percent prediction interval for the sales volume in an individual sales region when advertising expenditure is 10.

Figure 3.22(a)

Advertising Expenditure, x Sales Sales Region Volume, y 89 87 98 110 103 10 114 11 116 110 12 13 126 10 14 130 2 3 4 5 6

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Business Statistics In Practice Using Data Modeling And Analytics

ISBN: 9781259549465

8th Edition

Authors: Bruce L Bowerman, Richard T O'Connell, Emilly S. Murphree

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