Exercise 2: Testable Observations Determine which of the following observations
ID: 182693 • Letter: E
Question
Exercise 2: Testable Observations Determine which of the following observations are testable. For those that are testable: Determine if the observation is qualitative or quantitative Write a hypothesis and null hypothesis What would be 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 (charts, graphs, types)? How will you analyze your data? Observations A plant grows three inches faster per day when placed on a window sill than it does when placed on a on a coffee table in the middle of the living room. 1. 2. The teller at the bank 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 4. The Italian restaurant across the street closes at 9 pm, but the one two blocks away 5. For the past two days, the clouds have come out at 3 pm, and it has started raining at 6. George did not sleep at all the night following the start of daylight savings. lower than when she does not exercise and eats fatty foods. closes at 10 pm 3:15 pm. Click here to download and solve a few questions.Explanation / Answer
The observation number 1 and 3 are testable.
a] Both the observations are quantitative.
b] Hypothesis of observation 1: A plant placed in window will grow faster than a plant placed in the middle of the room.
Null Hypothesis of observation 1: A plant placed in window and middle of the room will grow.
Hypothesis of observation 3: Regular exercise and healthy food reduces the blood pressure of Sally.
Null Hypothesis of observation 3: There is no effect on blood pressure if no regular exercise and healthy food is involved in daily routine.
c] Experimental approach is regarding the positive and negative controls and the comparison of it.
d] The variables of observation 1 will be dependent because both are depend upon a specific condition whereas in observation 3, one variable is dependent which depends upon regular exercise and healthy diet and other is independent which is not dependent upon any situation.
e] The controls for both the observations will be positive and negative.
f] We can collect the data by designing and setting of the experiments after the specific time intervals.
g] We will present the data in the form of bar graphs which indicated the comparison of variables clearly.
h] We will analyze the data by statistical analysis which includes average, standard deviation or standard error determination.
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