Question

In: Statistics and Probability

The water diet requires one to drink two cups of water every half hour from when...

The water diet requires one to drink two cups of water every half hour from when one gets up until one goes to bed, but otherwise allows one to eat whatever one likes. Four adult volunteers agree to test the diet. They are weighed prior to beginning the diet and after six weeks on the diet. The weights ( in pounds) are Person 1 2 3 4 Weight before diet 180 125 240 150 Weight after diet 170 130 215 152 For the population of all adults, assume that the weights loss after six weeks on the diet ( weight before beginning the diet---weight after six weeks on the diet) is Normally distributed with mean μ. a. Test the hypothesis if the diet leads to weight loss. b. Construct a 95% confidence interval for the mean difference.

Solutions

Expert Solution

We have for difference data,          
              
Sample mean =7      
Sample standard deviation =13.64  
Sample size =4      
Level of significance=0.05      
Degree of freedom =3      
              
t critical value is (by using t table)=3.18  
              
Confidence interval formula for paired t test.


Related Solutions

The water diet requires one to drink two cups of water every half hour from when...
The water diet requires one to drink two cups of water every half hour from when one gets up until one goes to bed, but otherwise allows one to eat whatever one likes. Five adult volunteers agree to test the diet. They are weighed prior to beginning the diet and after six weeks on the diet. The weights (in pounds) are Person                                       1          2          3          4         5 Weight before the diet             180      125      240      150      160 Weight after six weeks             165      126      230      149      140 Is there evidence that the diet leads to weight loss?...
The water diet requires one to drink two cups of water every half hour from when...
The water diet requires one to drink two cups of water every half hour from when one gets up until one goes to bed, but otherwise allows one to eat whatever one likes. Four adult volunteers agree to test the diet. They are weighed prior to beginning the diet and after six weeks on the diet. The weights ( in pounds) are Person 1 2 3 4 Weight before diet 180 125 240 150 Weight after diet 170 130 215...
Roger has been suffering from extreme thirst he drink numerous glasses of water every day and...
Roger has been suffering from extreme thirst he drink numerous glasses of water every day and urinates a great deal. Name two disorders that could produce these signs and symptoms. What test could a clinician perform to determine which disorder is present. Discuss in your own words other body systems that are being affected.
At Ajax Spring Water, a half-liter bottle of soft drink is supposed to contain a mean...
At Ajax Spring Water, a half-liter bottle of soft drink is supposed to contain a mean of 520 ml. The filling process follows a normal distribution with a known process standard deviation of 4 ml. (a) The normal distribution should be used for the sample mean because (You may select more than one answer. Click the box with a check mark for the correct answer and click to empty the box for the wrong answer.) the sample population has a...
When two or more people get the same illness from the same contaminated food or drink,...
When two or more people get the same illness from the same contaminated food or drink, the event is called a foodborne disease outbreak. In this posting, I would like you to find one case of foodborne disease outbreak (in the nation OR global) in the past FOUR years and write a short summary of 200 - 300 words about that incidence. Remember to include- location of the illness, year, kind of foodborne illness and symptoms, causal agent, its effect...
8. During a natural disaster, it is safe to drink the water from ________. a) car...
8. During a natural disaster, it is safe to drink the water from ________. a) car or truck radiators b) toilet bowls, if the bathrooms have not flooded c) swimming pools d) melted ice cubes that are in the freezer 9. Which of the following statements is true? a) Food-borne illnesses are usually characterized by the signs and symptoms of influenza. b) In the United States, the Center for Food Preservation and Safety is the primary government agency that oversees...
Effective and lasting weight loss requires ____. Select one: a. a diet that significantly reduces calorie...
Effective and lasting weight loss requires ____. Select one: a. a diet that significantly reduces calorie intake b. following a diet plan that is restrictive and demanding c. a lifestyle change that includes healthy eating and regular exercise d. going on a diet for a specific period of time
(1 point) Sheila's measured glucose level one hour after a sugary drink varies according to the...
(1 point) Sheila's measured glucose level one hour after a sugary drink varies according to the Normal distribution with μμ = 130 mg/dl and σσ = 20 mg/dl. What is the level L such that there is probability only 0.1 that the mean glucose level of 4 test results falls above L? L=
Sheila's measured glucose level one hour after a sugary drink varies according to the Normal distribution...
Sheila's measured glucose level one hour after a sugary drink varies according to the Normal distribution with μμ = 120 mg/dl and σσ = 20 mg/dl. What is the level L such that there is probability only 0.15 that the mean glucose level of 4 test results falls above L?
Shelia's measured glucose level one hour after a sugary drink varies according to the Normal distribution...
Shelia's measured glucose level one hour after a sugary drink varies according to the Normal distribution with µ = 118 mg/dl and s = 10 mg/dl. What is the level L (±0.1) such that there is probability only 0.01 that the mean glucose level of 4 test results falls above L?   
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT