1. In a test of the Atkins weight loss program, 30 randomly selected overweight individuals participated...

1.

In a test of the Atkins weight loss program, 30 randomly selected overweight individuals participated in a randomized trial. After one year, the mean weight loss was found to be 3lbs, with a standard deviation of 5.36 lbs Find a 95% confidence interval for the mean weight loss of all overweight adults who follow the Atkins program?

please include graph

Expert Solution

Here the sample size is 30, so we use large sample theory to find the confidence interval

orchestra answered 2 years ago

In a test of the Atkins weight loss program, 41 individuals participated in a randomized trial...

In a test of the Atkins weight loss program, 41 individuals participated in a randomized trial with overweight adults. After 12 months, the mean weight loss was found to be 2.1 Kg, with a standard deviation of 4.8 Kg. (a) What is the best point estimate for the mean weight loss of all overweight adults who follow the Atkins program? (b) Construct a 90% confidence interval for the mean weight loss for all such subjects? (c) Test the hypothesis that...

In a weight loss programs, 40 adults used the Atkins weight loss program. After 12 months,...

In a weight loss programs, 40 adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lb, with a standard deviation of 4.8lb. Construct a 97% confidence interval of the mean weight loss.h

1. Randomly selected statistics students participated in an experiment to test their ability to determine when...

1. Randomly selected statistics students participated in an experiment to test their ability to determine when 1 min has passed. Forty students yielded a sample mean of 58.3 sec. Assuming that s = 9.5 sec, use a 0.05 level of significance to test the claim that the population mean is equal to 60 sec. Be sure and include the appropriate interval (for alpha = .05, it is a 95% confidence level) in your conclusion. Conduct a hypothesis test. 3. Assume we want to...

InatestoftheAtkinsweightlossprogram,30randomlyselectedoverweight individuals participated in a randomized trial. After one year, the mean weight loss was found...

InatestoftheAtkinsweightlossprogram,30randomlyselectedoverweight individuals participated in a randomized trial. After one year, the mean weight loss was found to be 3 lbs, with a standard deviation of 5.36 lbs. Find a 95% confidence interval for the mean weight loss of all overweight adults who follow the Atkins program?

A group of 268 overweight people signed up for a weight loss program. Participants were asked...

A group of 268 overweight people signed up for a weight loss program. Participants were asked to choose whether they wanted to go on a vegetarian diet or follow a traditional low-calorie diet that included some meat. 153 people chose the vegetarian diet, and the rest chose to be in the control group and continue to eat meat. There was a greater weight loss in the vegetarian group. What is the sample size of each group? What percentage of people...

Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal weight...

Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal weight individuals. To test this hypothesis, she has two assistance sit in a McDonalds restaurant and identify individuals who order the Big Mac Special (Big Mac, fries, and Coke) for lunch. The Big Mackers, as they are affectionately called by the assistants, are classified as overweight, normal weight or neither overweight nor normal weight. The assistants identify 10 overweight and 20 normal weight Big Mackers....

Randomly selected statistics students participated in an experiment to test their ability to determine when 60...

Randomly selected statistics students participated in an experiment to test their ability to determine when 60 seconds has passed. Forty-six students yield a sample mean=57.43 seconds with a sample standard deviation=9.04 seconds. Use α=0.05 as a significance level to test the claim that the population mean equals to 60 seconds. Группа выборов ответов p-value=0.06, evidence support claim p-value=0.6, evidence not support claim p-value=0.06, evidence not support claim p-value=0.06, evidence support claim p-value=0.06, evidence not support claim

Randomly selected students participated in an experiment to test their ability to determine when one minute...

Randomly selected students participated in an experiment to test their ability to determine when one minute (or sixty seconds) has passed. Forty students yielded a sample mean of 57.5 seconds. Assuming that sigmaequals9.2 seconds, construct and interpret a 95% confidence interval estimate of the population mean of all students. hat is the 95% confidence interval for the population mean mu? Based on the result, is it likely that the students' estimates have a mean that is reasonably close to sixty...

In a test of the Weight Watchers weight loss program, weights of 42 subjects are recorded...

In a test of the Weight Watchers weight loss program, weights of 42 subjects are recorded before and after the program such that the x-value is an individual's weight at the start of the program and the y-value is the same person's weight after one year on the program. The mean of the starting weights was 192.7 pounds. The mean of the weights after one year was 178.2 pounds. The regression equation was found to be yˆ=.802x+30.27ŷ=.802x+30.27. The critical r-values...

A weight loss program claims that program participants have a mean weight loss of at least...

A weight loss program claims that program participants have a mean weight loss of at least 10 pounds after 1 month. You work for a medical association and are asked to test this claim. A random sample of 30 program participants and their weight losses (in pounds) after 1 month is listed in the table below. Assume the population standard deviation is 3. At α = 0.01, is there enough evidence to reject the program's claim? Samples: 4.7, 6.0, 7.2,...

Question