# Product internship cases: make a decision, not just a mockup

## Room use improves, but a failure measure gets worse

Fictional follow-up test. Each version has 200 eligible users and 1,000 booked room-hours. The predeclared limit is accidental cancellation affecting no more than 1% of eligible users.

### Observed outcomes

| Measure | A | B |
| --- | --- | --- |
| Unused booked hours | 200 | 150 |
| Total booked hours | 1,000 | 1,000 |
| Users with an accidental cancellation | 1 | 12 |
| Eligible users | 200 | 200 |

## Your turn

Calculate both rates. Does the improved room-use measure justify rolling out B under the stated rule?

## Your answer

[Write your approach here.]

## For your own application

Name the outcome you want to improve and a failure limit that would stop the change.

Return to the guide for the worked answer and source notes:
https://internshipdeadlines.com/guides/product-management-internship-case-preparation