I have data:
- How many people register on cinema web site
- How many of these registrations purchase tickets
Conversion from (1) to (2) is exponentially distributed.
However, I've noticed that conversion on Friday + weekends is slightly higher than on work days. Each day I have same number of registration. One registration costs the same amount of money regardless day of week.
Hypothesis:
Users registered on Friday + weekends are from another distribution in compare with users registered on workdays.
What For:
To spend more money on internet advertising during weekends and less during work days. Taking into account that registration costs the same regardless of a day of week.
Question
- Is it correct to test such hypothesis ?
- What test is more suitable for such situation?
My own thoughts were to compare this 2 distributions using Mann-Whitney U test.