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16 Jun 2019

1. What is your null (H₀) hypothesis?

2. What is your alternate (H_A) hypothesis?

3. Calculate the CC_j for these two sites (Remember: one number for both sites, not one CC_j for each site!).

4. What does this CCj value tell you?

5. What is the H value for:

a. the meadow: b. the forest:

6. Which site has a greater species richness how do you know?

7. Which site has a greater species diversity and how do you know?

8. Did you âRejectâ or âFail to Rejectâ your null hypothesis and why?

9. Please attach a SW table for each of the two sites.

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Patrina SchowalterLv2

18 Jun 2019

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Related questions

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

Â· Determine if the observation is qualitative or quantitative.

Â· Write a hypothesis and a null hypothesis.

Â· What is your experimental approach?

Â· What are the dependent and independent variables?

Â· What are your controls, both positive and negative?

Â· How will you collect your data?

Â· How will you present your data (e.g., chart, graph, type)?

Â· How will you analyze your data?

Observations

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.

Quantitative

2. The bank teller with brown hair and brown eyes is taller than the other tellers.

Null Hypothesis

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.

1. What is a âlognormalâ distribution? Have you heard this kind of a distribution under a different name?

Lognormal distribution is a distribution of relative abundances of species by plotting the abundance of species as a frequency distribution in which each abundance interval is twice the preceding one (1, 2, 4, 8).

-It is a statistical expectation

-Product of many random environmental variables acting on the population of species

2. Why would a species survey with a greater sample size show a more complete lognormal distribution than a survey with a smaller sample size?

3. What two factors are considered in a quantitative diversity index? How do these factors differ from each other?

4. Explain how environmental heterogeneity can generate both aquatic and terrestrial plant diversity.

5. Consider the intensity of some disturbance in a community along a gradient (lowâ¦ mediumâ¦ high intensity). Use a âGoldilocks and the Three Bearsâ analogy to explain how species diversity can be shaped by disturbance along such a gradient.

4 According to a commercial, drinking water that has been blessed by Bill Nye the Science Guy improves your test scores. You think this is complete nonsense and want to disprove it. So you set up an experiment.

4a Would this be an observational or an empirical study?

4b To test it, for a total of 10 weeks, you take one test every week. Alternating weeks, you will drink regular water (control) and blessed water (treatment). How many replicas will you have?

4c What would be your null-hypothesis?

4d What would be your alternative hypothesis?

4e Name 3 possible confounding factors.

4f What is your independent variable?

4g Wat is your dependent variable?

4hs You set your a-level as always at 0.05, and do a statistical analysis to see if there is a difference in test scores between the two groups. The statistical analysis result is p=0.06 Is there a significant difference in test scores? Yes / No / Donât know

4i Based on the statistical analysis outcomes, does drinking blessed water improve test results? Yes / No / Donât know

4j 10 points A placebo effect is an improvement in a personâs perceived health from taking a non-active ingredient, presumably because of the belief that they are receiving a treatment helps that person to feel better. Your mind is a powerful thing and certainly can influence your health in real ways, so a placebo effect would include real improvements that come from âmind over matterâ as well as simple changes in perception. How can you avoid the placebo effect in this study?