Please help with these questions chapt 3c

7. North American Drug Company wants to forecast demand for a new migraine drug. A review of the past 30 months of sales indicates that sales are increasing. What time series pattern does the sales likely exhibit? Required to answer. Single choice.

Cyclicality

Trend

Seasonality

Random variation

8.The Clinic Consortium completes a study of drug abuse levels as related to number of prescriptions written and poverty level. Which analysis technique was used? Required to answer. Single choice.

Time series analysis

Cluster analysis

Decision analysis

Multiple regression analysis

9. A city hospital wishes to evaluate the nursing labor hours it needs based upon monthly unoccupied bed days and average length of patients stay. The regression equation is: Y = 357 + 10X1 + 50X2. What labor hours would be predicted if X1 bed days = 250 and X2 stay days = 83? Required to answer. Single choice.

7107

8511

7007

7315