Solution-Sampling method and experimental design

Sampling method and experimental design

Assignment Help Basic Computer Science

Reference no: EM131164023

People who eat lots of fruits and vegetables have lower rates of colon cancer than those who eat little of these foods. Fruits and vegetables are rich in "antioxidants" such as vitamins A, C, and E. Will taking antioxidants help prevent colon cancer?

A medical experiment studied this question with 864 people who were at risk of colon cancer. The subjects were divided into four groups: daily beta-carotene, daily vitamins C and E, all three vitamins every day, or daily placebo. After four years, the researchers were surprised to find no significant difference in colon cancer among the groups.

Explain what sampling method and experimental design you would use to conduct such research.
What do you think "no significant difference" means in describing the outcome of the study?
Suggest some lurking variables that could explain why people who eat lots of fruits and vegetables have lower rates of colon cancer. (The experiment suggests that these variables, rather than the antioxidants, may be responsible for the observed benefits of fruits and vegetables.

Answer only needs to be minimum 250 words, nothing fancy like graphs or anything just words.

Reference no: EM131164023

Questions Cloud

Draw three of this economist indifference curves : An unnamed economist enjoys drinking beer while watching the tv show, Game of Thrones. What do we call the relationship between 12 oz and 16 oz bottles for this economist? In the commodity space for 12 oz and 16 oz bottles of beer, draw 3 of this eco..

What is the regular selling price of the office furniture : Miranda purchases office furniture for a wholesaler listed at $800, less discountes of 20% and 10%. She has overhead expenses of 20% of the cost and wants to have an operating profit if 30% of the cost.

Determine the land area of country : The combined land area of the countries A and B is 170,973 square kilometers. Country A is larger by 773 square kilometers. Determine the land area of each country.

Three classification for overall management development : Name three classifications for overall management development objectives, - and aslo provide examples of each three classifications.

Sampling method and experimental design : People who eat lots of fruits and vegetables have lower rates of colon cancer than those who eat little of these foods. Fruits and vegetables are rich in "antioxidants" such as vitamins A, C, and E. Will taking antioxidants help prevent colon canc..

Despite the absence of patent protection : Semi-Salt Industries began its operation in 1975 and remains the only firm in the world that produces and sells commercial-grade polyglutamate. Despite the absence of patent protection, Semi-Salt has averaged accounting profits of 5.5 percent on inve..

Construct a graph of the height of devin throw : Construct a graph of the height of Devin's throw as a function of time on the same set of axes as the graph of Leslie's throw (if not done already), and explain how this can confirm your claims to parts (a) and (b). You do not need to submit the g..

Find the time variation of the displacement : Find the time variation of the displacement, x(t), and the relative displacement, x(t) - y(t), f the package. Assume zero initial conditions.

What effect does the intensity of light have : Define a hypothesis that is suggested by the data that are collected in the lab. Complete a lab report using the scientific method. What effect does the intensity of light have on the rate of photosynthesis?

User Account

All Pages

Sampling method and experimental design

Reference no: EM131164023

Reference no: EM131164023

Questions Cloud

Reviews

Write a Review

Basic Computer Science Questions & Answers

Identifies the cost of computer

Input devices

Cores on computer systems

Prepare an annual budget in an excel spreadsheet

Write a research paper in relation to a software design

Describe the forest, domain, ou, and trust configuration

Construct a truth table for the boolean expression

Evaluate the cost of materials

The marie simulator

What is the main advantage of using master pages

Describe the three fundamental models of distributed systems

Distinguish between caching and buffering

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT