Hi all this is my first time posting and hope that someone might be able to help with my direct mail test.
Using online calculators or the formula behind these calculators(see attached pdf) where:
However, is that 357 mailed or 357 responses?
Thank you in advance.
Gary
Using online calculators or the formula behind these calculators(see attached pdf) where:
- population is 5000,
- Standard Deviation (p(1-p)) used is 0.5,
- Calculated at 95% confidence and
- 5% margin of error
However, is that 357 mailed or 357 responses?
Thank you in advance.
Gary