A medical researcher is interested in reducing patients’ cholesterol levels and randomly assigns participants to receive either a new drug or an existing drug. Below is a data matrix showing a portion of the data collected in this study. What type of variable is income? Sex Age Drug Income Smoke Cholesterol Systolic BP Diastolic BP Female 42 old Under $10,000 No 278 155 91 Male 44 old $100,001 to $150,000 No 255 132 83 Male 53 new Above $360,000 Yes 305 161 97 … … … … … … … Male 40 old $50,001 to $60,000 Yes 298 163 96  

A researcher is investigating the effects of Melatonin on sleep. They recruit pairs of identical twins and randomly assign one twin in each pair to receive melatonin and the other to receive a placebo. The average number of hours of sleep for each participant is then recorded. What type of study is this?

A newspaper reporter requests an easy-to-read graph displaying the populations of African countries (52 countries in total). The reporter wants a graph that clearly highlights which countries have the highest and lowest population sizes. Which of the following types of graphs would be most appropriate for this purpose?

Using the histogram on the left and the four box plots on the right below, which boxplot matches the histogram? The red dots on the histogram indicate the mean of the distribution. Note that the x-axis on the histogram corresponds to the y-axis for the boxplots.  

A professor wants to visualize the distribution of scores on their most recent exam (recorded as percentages). Which type of graph would be most appropriate for displaying the distribution of these scores? Choose the best answer from the given choices. 

A researcher collected data on the heights of a sample of individuals from five different countries. There is an interest in visualizing the relationship between height and the country of origin. Which type of graph would be most appropriate for this purpose?

Which skin findings may be normal in a newborn? (Select all that apply)

You are providing AT services for a recreational men’s basketball tournament.  One of the athletes was recently diagnosed with Type 2 diabetes and prescribed Trulicity.**     He states he has noticed his stomach gets upset sometimes and his appetite has decreased. He is wondering if this is normal.  Explain your answer to him.  (2 pts) He is curious what taking this drug actually does to help his diabetes. Explain the mechanism of action for Trulicity.  (3 pts) He states he injects the dose on the same day each week, but wants to change the day he administers the medicine. What is your advice on how to do this? (1 pt)

What is the impact of cigarette smoking relative to risks associated with oral contraceptives?**

What concern does the FDA have regarding the contraception patch containing norelgestromin?**