A marine biology research team conducted a survey to monitor the health of coral colonies at two different reef zones. They examined colonies at an Inshore Reef and an Offshore Reef, categorising each colony's condition as Healthy, Partially Bleached, or Severely Bleached. Their results are summarised in Table 1 below.
Table 1: Health status of surveyed coral colonies
| Healthy | Partially Bleached | Severely Bleached | Total | |
|---|---|---|---|---|
| Inshore Reef | 12 | 18 | 10 | 40 |
| Offshore Reef | 22 | 11 | 7 | 40 |
| Total | 34 | 29 | 17 | 80 |
In what percentage of the total surveyed coral colonies was the colony healthy and located on the Offshore Reef?
Show your calculations.
235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.