Solution Found!

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola
Change Question

Clinical Trial of Lipitor Lipitor is the trade name of the

Chapter 11, Problem 19BSC

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Problem  19BSC

Clinical Trial of Lipitor Lipitor is the trade name of the drug atorvastatin, which is used to reduce cholesterol in patients. (Until its patent expired in 2011, this was the largest-selling drug in the world, with annual sales of $13 billion.) Adverse reactions have been studied in clinical trials, and the table below summarizes results for infections in patients from different treatment groups (based on data from Parke-Davis). Use a 0.01 significance level to test the claim that getting an infection is independent of the treatment. Does the atorvastatin treatment appear to have an effect on infections?

 

Placebo

Atorvastatin 10 mg

Atorvastatin 40 mg

Atorvastatin 80 mg

Infection

27

89

8

7

No Infection

243

774

71

87

Questions & Answers

QUESTION:

Problem  19BSC

Clinical Trial of Lipitor Lipitor is the trade name of the drug atorvastatin, which is used to reduce cholesterol in patients. (Until its patent expired in 2011, this was the largest-selling drug in the world, with annual sales of $13 billion.) Adverse reactions have been studied in clinical trials, and the table below summarizes results for infections in patients from different treatment groups (based on data from Parke-Davis). Use a 0.01 significance level to test the claim that getting an infection is independent of the treatment. Does the atorvastatin treatment appear to have an effect on infections?

 

Placebo

Atorvastatin 10 mg

Atorvastatin 40 mg

Atorvastatin 80 mg

Infection

27

89

8

7

No Infection

243

774

71

87

ANSWER:

Solution  19BSC

Step 1 of 1

We are given a data set of infections among people given different groups of treatments. We have to test the claim that getting an infection is independent of the treatment.

Step 1: To test the claim we need to fulfil certain assumptions.

1. We assume that the sample has been randomly selected because of the structure of the study.

2. The results are tabulated as frequencies.

3. The expected frequencies are more than five in every column.

Add to cart

Study Tools You Might Need

Chapter: 8 Problem: 11P

An Introduction to Thermal Physics 1
Problem 11P Consider a gas of hard spheres, which do not interact at all unless their separation distance is less than r0, in which case then interaction energy is infinite. Sketch the Mayer f-function for this gas, and compute the second virial coefficient. Discuss the result briefly.

Chapter: 5 Problem: 2

College Physics 1
Problem 2PE (a) When rebuilding her cars engine, a physics major must exert 300 N of force to insert a dry steel piston into a steel cylinder. What is the magnitude of the normal force between the piston and cylinder? (b) What is the magnitude of the force would she have to exert if the steel parts

Chapter: 18 Problem: 15P

Principles of General Chemistry 2
Problem 15P Which solution has the higher pH? Explain. (a) A 0.1M solution of an acid with Ka = 110-4 or one with Ka = 410 -5 ________________ (b) A 0.1M solution of an acid with pKa = 3.0 or one with pKa = 3.5 ________________ (c) A 0.1 M solution or a 0.01M solution of a weak acid _____________

Chapter: 11 Problem: PROBLEM 11-35

Organic Chemistry 9
A student wanted to use the Williamson ether synthesis to make (R)-2-ethoxybutane. He remembered that the Williamson synthesis involves an SN2 displacement, which takes place with inversion of configuration. He ordered a bottle of (S)-butan-2-ol for his chiral starting material. He also remembered th

Chapter: 2 Problem: 20

Anatomy & Physiology 1
CH4 is methane. This compound is ________. a. inorganic b. organic c. reactive d. a crystal

Chapter: 3 Problem: 3

Campbell Biology: Concepts & Connections 7
A glucose molecule is to starch as (Explain your answer.) a. a steroid is to a lipid. b. a protein is to an amino acid. c. a nucleic acid is to a polypeptide. d. a nucleotide is to a nucleic acid. e. an amino acid is to a nucleic acid.

Chapter: 7 Problem: 6

Urban Economics 8
Consider a modern city in which office employment has been steadily shifting from the city center to suburban locations along beltways. Suppose that the city improves its mass-transit system, decreasing the monetary and time costs of radial travel. Assume the improvement in the transit system does no

Chapter: 11 Problem: 3

Principles of Economics 9
Fredo loves watching Downton Abbey on his local public TV station, but he never sends any money to support the station during its fund-raising drives. a. What name do economists have for people like Fredo? b. How can the government solve the problem caused by people like Fredo? c. Can you think of wa

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back