BIOL 1005 Quiz 2 Key Spring 2016 (1)

BIOL 1005 Quiz 2 Key Spring 2016 (1) - 5 Refer to the...

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BIOL 1005 Quiz 2 Key (Answers are in red) 1. T/ F At the end of an experiment it is possible to reject both the null and alternative hypothesis. (1pt) 2. Briefly explain the difference between hypotheses and predictions. (2pts) Hypotheses only state whether we will or will not see differences between two groups. Predictions state the direction in which we will see a difference (i.e. growth will increase, etc.) 3. T/ F The purpose of a control is so you have a back-up in case something goes wrong with the first trial (1pt). 4. Why is it important to use multiple replicates when conducting an experiment? (2pts) It is important so that you can see if your measurements are consistent. Inconsistent measurements can result from human error or other types of error such as electronic noise in an instrument.
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Unformatted text preview: 5. Refer to the graph (Figure 1) below: a-Though at first glance it appears that treatment 2 works the best, the differences in the amount of benzoquinone produced by the 3 treatments was not significant. Briefly explain how you can tell. (2pts) The amounts of benzoquinone for each treatment do not statistically differ from one another because the errors for all treatments overlap with one another. b-The graph below would only receive partial credit if graded. What’s missing? (2pts) The axes are not labeled. Figure 1: The efect o± temperature on the produc²on o± benzoquinone. Treatment 1 = 30°C, Treatment 2 = 50°C, Treatment 3 = 70°C....
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