Question
In: Statistics and Probability
Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data...
Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data are recorded in the table below. Do you think that their cholesterol levels were significantly lowered? Conduct a hypothesis test at the 5% level. Starting cholesterol level Ending cholesterol level 160 160 200 240 100 130 240 220 200 190 180 150 190 200 360 300 280 300 260 240 NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) State the distribution to use for the test. (Enter your answer in the form z or tdf where df is the degrees of freedom.) Part (e) What is the test statistic? (If using the z distribution round your answer to two decimal places, and if using the t distribution round your answer to three decimal places.) t = Part (f) What is the p-value? (Round your answer to four decimal places.)
Solutions
orchestra answered 2 years agoRelated Solutions
Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data...
Ten individuals went on a low-fat diet for 12 weeks to lower
their cholesterol. The data are recorded in the table below. Do you
think that their cholesterol levels were significantly lowered?
Conduct a hypothesis test at the 5% level.
Starting Cholesterol level
ending cholesterol level
150
150
210
240
110
130
240
220
200
190
180
150
190
200
360
300
280
300
260
240
1. In words, state what your random variable
Xd represents.
a. Xd represents the total...
Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data...
Ten individuals went on a low-fat diet for 12 weeks to lower
their cholesterol. The data are recorded in the table below. Do you
think that their cholesterol levels were significantly lowered?
Conduct a hypothesis test at the 5% level.
NOTE: If you are using a Student's t-distribution for the
problem, including for paired data, you may assume that the
underlying population is normally distributed. (In general, you
must first prove that assumption, though.)
Starting cholesterol level/Ending cholesterol level
140/140...
Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data...
Ten individuals went on a low-fat diet for 12 weeks to lower
their cholesterol. The data are recorded in the table below. Do you
think that their cholesterol levels were significantly lowered?
Conduct a hypothesis test at the 5% level.
Starting
cholesterol level
Ending cholesterol
level
140
140
220
250
110
130
240
220
200
190
180
150
190
200
360
300
280
300
260
240
NOTE: If you are using a Student's t-distribution for
the problem, including for paired...
A study is conducted to compare mean cholesterol levels for individuals following a low-carbohydrate diet for...
A study is conducted to compare mean cholesterol levels for
individuals following a low-carbohydrate diet for at least 6 months
to individuals following a conventional (low-fat, low-calorie) diet
for at least 6 months. The data are summarized here:
Diet Program
Sample Size
Mean Cholesterol
Standard Deviation Cholesterol
Low carbohydrate
50
225.4
24.5
Conventional
75
203.8
21.6
Using the five-step approach to hypothesis testing, test if
there is a significant difference in mean cholesterol levels
between the diet programs using a...
Describe a low carbohydrate diet and a low fat diet. Be sure to describe them at...
Describe a low carbohydrate diet and a low fat diet. Be sure to
describe them at the molecular level and relate them to the
pathways we’ve studies in this class. Compare and contrast these
two with a severe caloric deficit diet (i.e. starvation). Which of
the two diets most closely resembles starvation in terms of
metabolic pathways.
The ketogenic diet (or keto diet, for short) is a low-carb, high-fat diet that is based...
The ketogenic diet (or keto diet, for short) is a low-carb,
high-fat diet that is based on ketogenesis. Explain physiology of
ketogenic diet. Explain why a diabetic may benefit from ketogenic
diet. Explain the possible adverse side effects of ketogenic
diet
This week's focus was a low fat and low salt diet. Answer the questions and share...
This week's focus was a low fat and low salt diet. Answer the
questions and share the following information. Also, discuss your
personal experience following this meal plan. What advice would you
give to a patient that would need to follow this diet.
1. As you will be reading food labels to select your
low Sodium food choices, Discuss something you learned or share
with the rest of the class, a food label comparison for sodium
content (did you find a...
A health researcher was interested in comparing three methods of weight loss: low-calorie diet, low-fat diet,...
A health researcher was interested in comparing three methods of
weight loss: low-calorie diet, low-fat diet, and high-exercise
regimen. He selected 15 moderately overnight subjects and randomly
assigned 5 to each weight-loss program. The following weight
reductions (in pounds) were observed after a one-month period:
Low-fat diet: 7,6,8,8,6 low Calorie diet: 7,7,5,4,5 high exercise:
7,8,7,9,8
a) Test the null hypothesis that the extent of weight reduction
does not differ by type of weight-loss program. (Set α=.01 level)
(10 points) b)...
Suppose that gene therapy could be used to lower levels of cholesterol and saturated fat in...
Suppose that gene therapy could be used to lower levels of
cholesterol and saturated fat in the blood, thus allowing people to
consume fat-rich fried foods with little risk of heart disease.
However, this treatment might not work for everyone, and there
would be no way of knowing in advance who would benefit. As a
result, some people would inevitably die prematurely from heart
disease. Should such gene therapy be approved for use in humans?
Answer this question by briefly...
Suppose that gene therapy could be used to lower levels of cholesterol and saturated fat in...
Suppose that gene therapy could be used to lower levels of
cholesterol and saturated fat in the blood, thus allowing people to
consume fat-rich fried foods with little risk of heart disease.
However, this treatment might not work for everyone, and there
would be no way of knowing in advance who would benefit. As a
result, some people would inevitably die prematurely from heart
disease. Should such gene therapy be approved for use in humans?
Answer this question by briefly...
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