Determine which of the observations below are testable. For those that are testable:

• Determine if the observation is qualitative or quantitative.
• Write a hypothesis and a null hypothesis.
• What is your experimental approach?
• What are the dependent and independent variables?
• What are your controls, both positive and negative?
• How will you collect your data?
• How will you present your data (e.g., chart, graph, type)?
• How will you analyze your data?

1. A plant grows three inches faster per day when placed on a window sill than it does when placed on a coffee table in the middle of the living room.
2. The bank teller with brown hair and brown eyes is taller than the other tellers.
3. When Sally eats healthy foods and exercises regularly, her blood pressure is 10 points lower than when she eats fatty foods and does not exercise.
4. The Italian restaurant across the street closes at 9 pm, but the one two blocks away closes at 10 pm.
5. For the past two days, the clouds have come out at 3 pm, and it has started raining at 3:15 pm.
6. George did not sleep at all the night following the start of Daylight Savings Time.