Garlic for Reducing Cholesterol In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.4 and a standard deviation of 21.0 (based on data from “Effect of Raw Garlic vs Commercial Garlic Supplements on Plasma Lipid Concentrations in Adults with Moderate Hypercholesterolemia, ” by Gardner et al.,  Archives of Internal Medicine, Vol. 167). Test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment?

Question
Asked Jan 25, 2020
2 views

Garlic for Reducing Cholesterol In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.4 and a standard deviation of 21.0 (based on data from “Effect of Raw Garlic vs Commercial Garlic Supplements on Plasma Lipid Concentrations in Adults with Moderate Hypercholesterolemia, ” by Gardner et al.,  Archives of Internal Medicine, Vol. 167). Test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment?

check_circle

Expert Answer

Step 1

The null and the alternative hypotheses are,

H0: µD≤0 (The mean change in LDL cholesterol level is less than or equal to zero.)

H1: µD>0 (The mean change in LDL cholesterol level is greater than to zero.)

The test statistic is,

Statistics homework question answer, step 1, image 1
fullscreen
Step 2

P-value:

The P-value is calculated by using Excel and it s...

Statistics homework question answer, step 2, image 1
fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: How do we denote the statistics used to estimate a. y-intercept of the population regression plane? ...

A: a) The graph of the population regression equation is shown below. The y intercept in the equation i...

question_answer

Q: In each of Exercises, we provide a sample mean, sample size, sample standard deviation, and confiden...

A: a) Givensample mean = xbar =20sample size = n =36sample standard deviation = s = 3confidence interva...

question_answer

Q: Grade Prediction. The Statistics Department at a large university would like to predict the final gr...

A: Predictor variable :- It is the independent variable in the regression equation, which explains the ...

question_answer

Q: 50 psychology students took a standardized test. The scores are summarized in the GFDT below.    ...

A: Click to see the answer

question_answer

Q: A confidence interval for a population mean has length 20. a. Determine the margin of error.b. If th...

A: According to the provided information, the length of the confidence interval is 20.(a) The margin of...

question_answer

Q: Air Conditioning Service . Encore Air Conditioning charges $36 per hour plus a $30 service charge. I...

A: Click to see the answer

question_answer

Q: What kind of plot is useful for deciding whether it is reasonable to find a regression to find a reg...

A: Scatterplot matrix:It is a collection of scatterplots organized into a matrix. Each scatterplot show...

question_answer

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the ind...

A: The value of z-score formula is given below:

question_answer

Q: How do I interpret the 6 charcteristics of data when I am only given the mean, median, mode, and sta...

A: According to the provided information, mean, median, mode, and standard deviation are given.