Question

The following partial MINITAB regression output for the Fresh detergent data relates to predicting demand for future sales periods in which the price difference will be.10 Predicted Values for New Observations New Obs Flt 8.4139 2 8.4845 SE FIt 1483 125 95% CI (8.1101, 8.7177) (8.2284, 8.7407) 95% PI (6.9872, 9.8406) 7.0672, 9.9019) (a) Report a point estimate of and a 95 percant confidence interval for the mean demand for Fresh in all sales periods when the price difference is.10. (Round your answers to 3 decimal places.) Point estimateE Confidence interval- (b) Report a point prediction of and a 95 percent prediction interval for the actual demand for Fresh in an individual sales period when the price difference is .10. (Round your answers to 3 decimal places.) Point estimate Confidence interval - (c) Remembering that s-.680530 and that the distance value equals si/s use s from the computer output to hand calculate the distance value when x-.10. (Round your answer to 4 decimal places.) dv= d) For this case: n 30, b0-8366789 by 470914, and s 680530 Using this information, and your result from part c find 99 percent confidence and prediction intervals for mean and individual demands when x.10. (Round your answers to 4 decimal places.) 99% CL:[ 99% PI

Answer 1

predicted value to new ỜSerw Has 5i.bl | g.4139 1.1483| 8. ll ol, 8. m)| (6.9872.9.3106 |8.48451.125! (3-1284, 6-14예(7-0642, 9.9019 | 2 ff lthe meon demand tl tresh all say periods oke.. price díttercuG 、Slo table paut 8stmote is .4139 So the ven above So Me above G.q8+2, 9-840 干. 06H, 9.9019 (C) So Nouo uoe ?emermbe a t di stauG value 6 680530 aud

So lte qiven Sq- O.t4-83 vcluu O 1483 b,6 80530 - lO. 04+48 rt trom pot )

Rterols.t히 mean aud liqdividual demands ama 8 3668 O. o4 +014- 8 413 88O4 8.4138 So Nlao decree of \vcedo a tollouos Subs?tule I to ti akove

coutrdeute asel t degree o ficedomisax S 963 mecu demand co tie fven p? (e dttere«le is p.lo Sub stitule It alu tutoi above -8. 4138士1.880304 3910.047488 8-82355, 8 00405) («. 9A3 55, 8.00405

So o tilud predrcl. ta actual g.4138 -^63x(o.6830)414 41381 2.3543 (10.6 8 6.0595) o68, 6 0595