Prepare answers to the following assignments from the e-text, Applied Statistics in Business and Economics, by Doane and Seward:

Chapter 10 - Chapter Exercises

10.30

In Dallas, some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet o READ MORE »

8.46 A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were

3.087, 3.131, 3.241, 3.241, 3.270, 3.353, 3.400, 3.411, 3.437, 3.477

(a) Construct a 90 percent confidence interval for the true mean weight. (b) What READ MORE »

Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean READ MORE »

*18. DEF A/C Remodelers has contracted to reconfigure the interior of a large corporate A/C. The project manager has determined that there are 11 steps to the process. In consultation with the project foreman he has determined the sequence and precedent for the 11 events, labeled A - K, and has READ MORE »

The number of days Americans take each year for vacation is normally distributed with a mean of 15.8 days and a standard deviation of 2.2 days.

X P(X < x) P(X > x) Mean Std dev

11 .0146 .9854 15.8 READ MORE »