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(02.04 MC)  Ten subjects are being studied to test the effectiveness of itch relief for three types of medication: A, B, and C. Using a 10-point scale, the researcher calculates the subjects’ amount of itching before treatment compared with the amount of itching after treatment. The response variable is the itch rating after one hour of treatment. Previous studies have shown the effects of treatment may vary based on a subject’s pain resistance. How should the subjects be blocked? Explain. (4 points)

Left ventricular and right ventricular failure are both initiated by other diseases in the client’s body. Which of these specifically impacts the left ventricle?  

(02.02 LC)  In one study on the effect of coconut oil on hair growth, 140 subjects who acknowledged being long-time coconut oil users had their hair growth compared with those of 140 people who had never used coconut oil. In a second study, 80 subjects were randomly chosen to use coconut oil and 80 were chosen to use a placebo. Identify the types of studies performed. (4 points)

A client wants to know if there is a difference between a lymphoma and a leukemia. Which statement should the nurse share?

(02.04 LC)  To study the effect of music on production in a cell phone factory, two experimental treatments are planned: day-long classical music for one group versus day-long rap music for another. Which of the following groups would serve best as a control for this study? (5 points)

(01.02 LC)  The IQ of 10 adults is measured, and the results are 83, 87, 90, 92, 93, 100, 104, 111, 115, 121. Find the range of the data set. (4 points)

(02.02 MC)  A group of experimenters has 60 wasps in a large container and needs to assign 15 to each of four groups labeled A, B, C, and D for an experiment. They can capture the wasps one at a time when the wasps enter a side chamber in the container that is baited with food. Which of the following methods is most likely to result in four comparable groups of 15 wasps each? (4 points)

(02.01 MC)  A talent show broadcast on television asks viewers to call in to vote for their favorite act. Describe how the design of the survey leads to bias. (4 points)

(01.05 MC)  The salaries, in thousands of dollars, of all individuals employed at an online schooling company are depicted in the boxplot below: What is the interquartile range (IQR) of the salaries? (4 points)

Interstitial cystitis (IC) is characterized by: Select all that apply.