Step 1: Anticipate your analysis. In each figure below (A-C), the y-axis represents the growth rate of a population of owls. Growth rate is a continuous variable, with values greater than zero indicating a positive growth rate and values less than zero indicating a negative growth rate. The x-axis represents the density of prey hunted by owls. Prey density is a continuous variable, with higher values indicating greater prey density. The dashed red line represents a hypothetical linear model (slope) of the relationship between prey density and the growth rate of the owl populations. The mean prey density for each population of owls is marked by an arrow pointing to the x-axis.

What might be the result of a medication that increases the activity of cholesterol receptors in non-liver cells in the body?

Part 1: Population A Directions: Refer to the “Pop A Prey Density” sheet, which contains Population A’s prey densities from 1971 to 2020 (sample size = 50 years). Use Excel for calculations, modeling, and graphing a frequency distribution of Population A’s prey density.

What formula did you use to calculate the probabilities that growth is >0?

Calculate the standard deviation of the prey density of Population B from 1971 to 2020.

What are the different statuses a group can have during the booking process? Select all that apply

Select the prey density that best matches the biologists’ goals in the above-mentioned paragraphs. 

Choose the answer that best explains your answer to Question 23. Assume two things when answering this question. Assume the relationship between prey density and the growth rate stays the same indefinitely, AND the prey density for both populations continues to equal their typical prey densities indefinitely.

Create a plot of the frequency distribution. Does a normal probability distribution reasonably model the prey density of Population B from 1971 to 2020?

Scenario You are a member of a committee formed to review recommendations for standard medical treatments. Your subcommittee has been assigned to evaluate two common dietary treatments for people with a high concentration of LDL cholesterol – a diet low in cholesterol or a diet low in saturated fats. Additionally, we need your subcommittee to evaluate and recommend an appropriate dose of a drug called statin, which has been shown to help reduce LDL cholesterol.