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.
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
A study is run comparing HDL cholesterol levels between men who exercise regularly and those who...
A clinical trial is run to assess the effects of different forms of regular exercise on HDL levels in a sample of healthy men between the ages of 18 and 29. Participants in the study were randomly assigned to either one of three exercise groups (Weight training, Aerobic exercise or Yoga) or to a control group in which they were assigned to a regular exercise program. Participants were instructed to follow the program for 8 weeks. Their HDL levels were...
As part of a study investigating the effects of vigorous exercise on risk of coronary heard disease, researchers measured HDL concentrations (mg/dL) in a sample of 19 male marathon runners as well as in a sample of 32 men who do not regularly exercise. The data are summarized below: Marathon runners: Mean | 51.3 mg/dL St. Dev.| 14.2 mg/dL Do not exercise: Mean | 44.0 mg/dL St. Dev. 15.0.mg/dL a. Assuming that the two distributions of HDL concentrations are normally...
A clinical trial is run to assess the effects of different forms of regular exercise on HDL levels in persons between the ages of 18 and 29. Participants in the study are randomly assigned to one of three exercise groups - Weight training, Aerobic exercise or Stretching/Yoga – and instructed to follow the program for 8 weeks. Their HDL levels are measured after 8 weeks and are summarized below. The research question is to test if there is a significant...
(2 points) A study on the proportion of women and men who follow a regular exercise program, found a 95% confidence interval for the difference in proportions between women and men, (pw - PM), is (-0.022, 0.111). Does this study provide strong evidence of a gender-based difference in exercise? Explain your answer using the confidence interval 40.
An investigator theorizes that people who exercise regularly will have mean systolic blood pressure levels that are significantly different from those of people who do not participate in a regular exercise program. To test this idea, the investigator randomly assigns 21 subjects to an exercise program for 10 weeks and 21 subjects to a non-exercise comparison group. After ten weeks, the mean systolic blood pressure of subjects in the exercise group is 132 and the standard deviation is 10. After...
Question 7 View Policles Current Attempt in Progress Is Fast Food Messing With Your Hormones? Examine the results of a study investigating whether fast food consumption increases one's concentration of phthalates, an ingredient in plastics which has been linked to multiple health problems including hormone disruption. The study included 8877 people who recorded all the food they ate over a 24-hour period and then provided a urine sample. Two specific phthalate byproducts were measured (in ng/mL) in the urine: DEHP...
Research question: In the population of all American adults, how strong is the relationship between age and reaction time? Data were collected from a representative sample of 500 American adults concerning their ages (in years) and reaction times (in milliseconds). What procedure should be used to estimate the strength of this relationship in the population? CI for single mean CI for single proportion CI for difference in means CI for difference in proportions CI for correlation 2Research question: To what...
Answer all parts and show a work Fishermen and their families are believed to have higher levels of mercury due to greater exposure and consumption of mercury than non-fishermen. Due to the potential health risks associated with the dietary consumption of mercury, a study was conducted to examine mercury levels in fishermen and in a control group of non-fishermen in a seaside community The partial dataset provided below represents the first few lines of data for this study, which involved...
In Data 4.1 on page 258, we examine a study in which mice were randomly assigned to either a normal light/dark cycle or to have a light on around the clock. According to the paper describing that study, "The global increase in the prevalence of obesity and metabolic disorders coincides with the increase of exposure to light at night." The study is examining whether light at night plays a causal role in the obesity epidemic. In Data 4.1, we examine...