12. An automatic cookie machine at ACM, Inc. must deposit a specified amount of 25 ` 0.3 grams (g) of dough for each cookie on a conveyor belt. It costs $0.03 to scrap a defective cookie. A sample of 50 cookies was drawn from the production process, which has been determined to be approximately normally distributed, and the results, in grams, can be found in worksheet tab Prob. 7-12 in the Excel file C07Data.

A B L D E Problem 7-12 ACM, Inc. 25.7660 24.4550 25.5250 26.0340 24.6960 23.5730 25.0160 25.5160 25.1240 24.7520 25.0420 25.8750 25.8910 25.3810 24.6040 24.7770 25.9860 24.5410 24.6470 24.8460 25.1670 24.3680 25.5090 24.7310 25.4070 24.1200 25.2890 24.5230 25.1860 25.0290 24.6690 24.8810 25.2620 25.4380 25.2180 24.8250 25.3010 24.8680 25.1980 25.4550 24.7630 24.9140 25.0670 25.6620 25.2270 25.5640 25.5930 24.8110 25.3290 25.8350 UAWN 25.1051