Homework Help: biostatistics

Posted by natasha on Saturday, November 26, 2011 at 10:51am.

7. Consider again the data in problem #6. Suppose that in the aerobic exercise group we also measured the number of hours of aerobic exercise per week and the mean is 5.2 hours with a standard deviation of 2.1 hours. The sample correlation is -0.42.

a)Is there evidence of a significant correlation between number of hours of exercise per week and HDL cholesterol level? Run the test at a 5% level of significance.
b) Estimate the equation of the regression line that best describes the relationship between number of hours of exercise per week and HDL cholesterol level (Assume that the dependent variable is HDL level).
c) Estimate the HDL level for a person who exercises 7 hours per week.
d) Estimate the HDL level for a person who does not exercise.

No one has answered this question yet.

Answer this Question

Related Questions

Biostatistics HW - Consider again the data in problem #6. Suppose that in the ...
biostatistics - A clinical trial is run to assess the effects of different ...
statistics - Suppose that in the aerobic exercise group we also measured the ...
physical education - why is aerobic exercise the best exercise of total weight ...
Sport Psychology - Which of the following types of exercise reliability reduce ...
Physics - A bothersome feature of many physical measurements is the presence of ...
statistics - a sample of 120 men and women randomly divided into 3 groups with ...
math - you want to survey students in ur school about their exercise habits. a ...
Bio - Why does an athlete switch from aerobic to anaerobic metabolism during ...
literature - "Regular aerobic exercise gives an individual more endurance&...

For Further Reading

First Name:
School Subject:
Answer: