In a test of the effectiveness of garlic for lowering cholesterol, 42 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before - after) in their levels of LDL cholesterol (in mg/dL) have a mean of 2.9 and a standard deviation of 16.7. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. What is the confidence interval estimate of the population mean u? I mg/dL

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
## Understanding Confidence Intervals in Cholesterol Studies

### Study Overview

In a research study assessing the effectiveness of garlic in lowering cholesterol, 42 participants were given garlic in a processed tablet form. Their cholesterol levels were measured both before and after treatment. The focus was on changes in LDL cholesterol (measured in mg/dL), which had a mean of 2.9 and a standard deviation of 16.7. The aim is to construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after administering the garlic treatment.

### Research Questions

- **What does the confidence interval indicate about garlic's effectiveness in reducing LDL cholesterol levels?**

### Helpful Resources

- [t Distribution Table](#)
- [Standard Normal Distribution Table - Page 1](#)
- [Standard Normal Distribution Table - Page 2](#)

### Confidence Interval Calculation

**Question:**  
What is the confidence interval estimate of the population mean \( \mu \)?

\[ \text{mg/dL} < \mu < \text{mg/dL} \]

*(Round to two decimal places as needed.)*

#### Instructions

- Enter the calculated values into the fields and click "Check Answer."

This exercise will help you understand how confidence intervals are used in medical studies to assess treatment effectiveness.
Transcribed Image Text:## Understanding Confidence Intervals in Cholesterol Studies ### Study Overview In a research study assessing the effectiveness of garlic in lowering cholesterol, 42 participants were given garlic in a processed tablet form. Their cholesterol levels were measured both before and after treatment. The focus was on changes in LDL cholesterol (measured in mg/dL), which had a mean of 2.9 and a standard deviation of 16.7. The aim is to construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after administering the garlic treatment. ### Research Questions - **What does the confidence interval indicate about garlic's effectiveness in reducing LDL cholesterol levels?** ### Helpful Resources - [t Distribution Table](#) - [Standard Normal Distribution Table - Page 1](#) - [Standard Normal Distribution Table - Page 2](#) ### Confidence Interval Calculation **Question:** What is the confidence interval estimate of the population mean \( \mu \)? \[ \text{mg/dL} < \mu < \text{mg/dL} \] *(Round to two decimal places as needed.)* #### Instructions - Enter the calculated values into the fields and click "Check Answer." This exercise will help you understand how confidence intervals are used in medical studies to assess treatment effectiveness.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 16 images

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman