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A wide receiver runs off of the field and toward you after an incomplete pass during a football game. They complain of pain after a report of jamming their middle finger when attempting to catch the ball. With evaluating range of motion, you note the athlete cannot actively extend the DIP joint of the involved finger. What injury do you suspect they suffered? 

De Quervain tenosynovitis usually affects the abductor pollicis longus and ___. (Select the best fit.)

Provide the list of Software Lifecycle activities/phases.

(2 points) Which of the following best describes a null hypothesis (H0) in the context of hypothesis testing?

(2 points) A box contains 4 red balls, 5 blue balls, and 6 green balls. Two balls are drawn at random without replacement. What is the probability that both balls are blue?

(2 points) A researcher fits a regression model and finds that all the predicted y-values fall close to the actual values. What does this suggest?

(2 points) A scatter plot shows that as students’ study time increases, their test scores tend to increase as well. What does this indicate about the correlation coefficient (r)?

(2 points) What is the significance level (alpha) used for in hypothesis testing?

A university event committee is forming a panel of 4 student speakers from a pool of 10 applicants. How many different combinations of 4 speakers can be selected if order does not matter? If the 4 selected students will speak in a specific order (introduction, keynote, response, and closing), how many different arrangements are possible? Explain the difference between the two results and why order matters in one case but not the other.

(2 points) A researcher compares the average exam scores of students taught using three different teaching methods. Which statistical test should be used?