Assignments must be computerised, and data should be analysed using MS Excel.

Question 2 The owner of a car wash station wants to improve the time for wash and dry. The policy states that if the process exceeds 15 minutes, there will be no charge. The time per vehicle on a typical day are normally distributed and were recorded as follows: 12 10 15 9 6 7 12 14 13 16 9 13 11 8 10 2.1. Calculate and evaluate the capability ratios. (9) 2.2. Determine the percentage of vehicle that exceeds 15 minutes. 2.3. The cost per wash and dry is R 40.00. Determine the loss of revenue if the station is open every day of the year. (6)