Kim Epson operates a full-service car wash, which operates from 8 a. m. to 8 p. m., 7 days a week. The car wash has two stations: an automatic washing and drying sta-tion and a manual interior cleaning station. The automatic washing and drying station can handle 30 cars per hour. The interior cleaning station can handle 200 cars per day.

Based on a recent year-end review of operations, Kim estimates that future demand for the interior cleaning station for the seven days of the week, expressed in average number of cars per day, would be as follows:

Day Mon. Tue. Wed. Thurs. Fri. Sat. Sun.
Cars 160 180 150 140 280 300 250

By installing additional equipment (at a cost of $50,000) Kim can increase the capacity of the interior cleaning station to 300 cars per day. Each car was generates a pretax contribution of $4.00. Should Kim install the additional equipment if she expects a pretax payback period of three years or less?

This problem has been solved! see the answerthe xyz corporation is interested in possible differences in days worked by salaried employees in three departments in the financial area. a survey of 23 randomly chosen employees reveals the data shown below. because of the casual sampling methodology in this survey, the sample sizes are unequal. research question: are the mean annual attendance rates the same for employees in these three departments? days worked last year by 23 employees department days worked budgets (5 workers) 278 260 265 245 258 payables (10 workers) 205 270 220 240 255 217 266 239 240 228 pricing (8 workers) 240 258 233 256 233 242 244 249 picture click here for the excel data filefill in the missing data. (round your p-value to 4 decimal places, mean values to 1 decimal place and other answers to 2group mean n std. dev variancesbudgets payables pricing total one factor anova source ss df ms f p-value treatment error total