Question - Percentage investment in new product development is monitored for a pharmaceutical company, by quarter. The observations are listed row-wise: 32.9 29.4 28.5 35.8 31.8 30.2 31.5 33.2 30.4 36.4 32.5 33 34.3 37.8 32.6 34.2 28.4 34.6 36.8 35 31.5 35 33.8 32.4 35 32.7 30.6 33.5 35.1 32 a. Construct a Run Chart b. Can we conclude that the percentage investment values over time are random? C. What type of special cause (clustering, mixture, trend, oscillation) do you suspect? Use a = 0.05.