higgsbreanne
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- Oct 10, 2021
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I had confusion regarding this question and how to approach it. If anyone could help, that would be amazing!
Athletic training researchers conducted a study on y=at rest heart rate and x=weekly hours of exercise, using 120randomly selected students. For those 120 students, the researchers found that the mean hours spent exercising was 5.82hours(?̅=5.82), with a standard deviation of 1.96hours(??=1.96), and mean at rest heart rate was 67.5 bpm(?̅=67.5), with a standard deviation of 7.9 bpm(??=7.9). The correlation between hours spent exercising and at rest heart rate was found to be –0.81(?=−0.81).
1. Interpret the value for ?. Does it make sense? Why, or why not?
2. Determine the (linear) regression equation.
3. What at rest heart rate would you predict for a student who exercised 7.3 hours per week?
4. Suppose we know that a particular student had an at rest heart rate of 50bpm. What would you estimate for the number of hours the student spent exercising weekly?
Athletic training researchers conducted a study on y=at rest heart rate and x=weekly hours of exercise, using 120randomly selected students. For those 120 students, the researchers found that the mean hours spent exercising was 5.82hours(?̅=5.82), with a standard deviation of 1.96hours(??=1.96), and mean at rest heart rate was 67.5 bpm(?̅=67.5), with a standard deviation of 7.9 bpm(??=7.9). The correlation between hours spent exercising and at rest heart rate was found to be –0.81(?=−0.81).
1. Interpret the value for ?. Does it make sense? Why, or why not?
2. Determine the (linear) regression equation.
3. What at rest heart rate would you predict for a student who exercised 7.3 hours per week?
4. Suppose we know that a particular student had an at rest heart rate of 50bpm. What would you estimate for the number of hours the student spent exercising weekly?
