4.11 Case Study: Flood Watch: Quiz
Problem 3
A campaign promoting blood donations is launched by placing advertisements in the newspaper over a 3-day period. The circulation of the newspapers on the 3 days is 52,000, 41,000, and 75,000.
The number of blood donations is tracked over the 2-week period beginning on the first day of advertising, with the results as follows:
| day | donations
|
| 1 | 45
|
| 2 | 56
|
| 3 | 66
|
| 4 | 72
|
| 5 | 81
|
| 6 | 83
|
| 7 | 82
|
| 8 | 87
|
| 9 | 77
|
| 10 | 63
|
| 11 | 50
|
| 12 | 54
|
| 13 | 48
|
| 14 | 45
|
- What is the base level of blood donations?
- What is the lag time between advertising and blood donations due to the advertising campaign?