Question

In: Statistics and Probability

A study is run comparing HDL cholesterol levels between men who exercise regularly and those who...

A study is run comparing HDL cholesterol levels between men who exercise regularly and those who do not. The data are shown below. Regular Exercise N Mean Std Dev Yes 35 48.5 12.5 No 120 56.9 11.9 Generate a 95% confidence interval for the difference in mean HDL levels between men who exercise regularly and those who do not.

Solutions

Expert Solution

orchestra answered 1 year ago
Next > < Previous

Related Solutions

A study is run comparing HDL cholesterol levels between persons who exercise regularly and those who do not. The data are shown below in Table 1.
  A study is run comparing HDL cholesterol levels between persons who exercise regularly and those who do not. The data are shown below in Table 1. Table: Mean HDL Cholesterol Levels by Regular Exercise Group n Mean Std Dev No Regular Exercise 8 55 11.9 Regular Exercise 8 45 12.1 Is the mean HDL cholesterol levels in the group with “no regular exercise” statistically greater than those who exercise regularly at an a=.05? Sp=12 Generate a 95% confidence interval...
1.) Which of the following are considered desirable levels for total cholesterol and HDL-cholesterol? a.) <220...
1.) Which of the following are considered desirable levels for total cholesterol and HDL-cholesterol? a.) <220 mg/dl, >60 mg/dl b.) <200 mg/dl, >60 mg/dl c.) <240 mg/dl, >40 mg/dl d.) <200 mg/dl, <60 mg/dl 2. Which of the following is NOT considered a component of health-related physical fitness? a.) Agility b.) Cardiorespiratory endurance c.) Muscle endurance d.) Flexibility e.) Body composition 3.) An optics check cassette is used with the Cholestech a.) to ensure that the display is readable. b.)...
A study reported that in a sample of 90 men, 27 had elevated total cholesterol levels...
A study reported that in a sample of 90 men, 27 had elevated total cholesterol levels (more than 200 milligrams per deciliter). In a sample of 110 women, 22 had elevated cholesterol levels. At the 5% level of significance, can you conclude that the proportion of people with elevated cholesterol levels for men is larger than the proportion of people with elevated cholesterol levels for women? Compute the p-value of the test.   Use at least five decimal places for the...
You are conducting a study to see if the proportion of men over 50 who regularly...
You are conducting a study to see if the proportion of men over 50 who regularly have their prostate examined is significantly more than 0.57. You use a significance level of α = 0.001 H 0 : p = 0.57 H1:p>0.57 You obtain a sample of size n=273 in which there are 177 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report...
You are conducting a study to see if the proportion of men over 50 who regularly...
You are conducting a study to see if the proportion of men over 50 who regularly have their prostate examined is significantly less than 64%. With H1 : p < 64% you obtain a test statistic of z = − 1.241 . Find the p-value accurate to 4 decimal places.
Comparing Population Measures of Center and Dispersion The HDL cholesterol (in mg/dL) of 10 males and...
Comparing Population Measures of Center and Dispersion The HDL cholesterol (in mg/dL) of 10 males and 10 females were recorded for random samples of Americans as part of a National Center for Health Statistics survey. Female Male 74 44 56 41 70 71 40 41 67 57 96 50 43 60 80 47 77 44 41 33 1. What is the population for this survey? 2. Find the mode and the range for each data set:            Female and Male 3....
In this exercise we are interested in comparing the proportion of those who support immigrant policy...
In this exercise we are interested in comparing the proportion of those who support immigrant policy reform among Hispanics and non-Hispanics. A poll found that out of 800 Hispanics 77% supported immigration reform and out of 900 non-Hispanics 64% supported immigration reform. Test the hypothesis that Hispanics are more likely to support immigration reform than non-Hispanics at alpha = 0.01.
A random sample of 150 men found that 88 of the men exercise regularly, while a...
A random sample of 150 men found that 88 of the men exercise regularly, while a random sample of 200 women found that 130 of the women exercise regularly. a. Based on the results, construct and interpret a 95% confidence interval for the difference in the proportions of women and men who exercise regularly. b. A friend says that she believes that a higher proportion of women than men exercise regularly. Does your confidence interval support this conclusion? Explain.
1. Elevated levels of plasma HDL cholesterol may be associated with lowered risk of coronary heart...
1. Elevated levels of plasma HDL cholesterol may be associated with lowered risk of coronary heart disease. Several studies have suggested that vigorous exercise may result in increased levels of HDL cholesterol. To investigate this theory, researchers measured HDL concentrations (mg/dL) in middle-aged (35-66 years) marathon runners, as well as inactive men. The data are summarized below. (Assume equal population variances in the two groups.) sample size mean st. dev Inactive men 70 43.3 14.2 Marathon runners 70 52.8 14.3...
Suppose the High-density lipoprotein (HDL) cholesterol levels of 20 subjects were measured before and after the...
Suppose the High-density lipoprotein (HDL) cholesterol levels of 20 subjects were measured before and after the treatment. We want to find out if, in general, the treatment will lead to improvements of health, i.e., increasing the HDL cholesterol level. The mean and standard deviation of the difference are 2.05, 2.837, respectively. We assume the differences follow normal. Use ? =0.05.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT