A conservationist monitored the survival rates of native rowan saplings planted with two different types of organic soil conditioners, Brand A and Brand B.
Table 2: The percentage survival rates of rowan saplings after 12 months
| Soil Conditioner | Percentage survival rate (%) |
|---|---|
| Brand A | 83 |
| Brand B | 59 |
What do the results shown in Table 2 suggest about the effectiveness of the two soil conditioners?
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.