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Notation In a clinical trial of the cholesterol drug

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 1BSC Chapter 5.4

Elementary Statistics | 12th Edition

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

Elementary Statistics | 12th Edition

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Problem 1BSC

Notation In a clinical trial of the cholesterol drug Lipitor, 270 subjects were given a placebo, and 7% of them developed headaches. For such randomly selected groups of 270 subjects given a placebo, identify the values of n, p, and q that would be used for finding the mean and standard deviation for the number of subjects who develop headaches.

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Problem 1BSC

Answer:

Step1 of 2:

We have In a clinical trial of the cholesterol drug Lipitor, 270 subjects were given a placebo, and 7% of them developed headaches. For such randomly selected groups of 270 subjects given a placebo,we need to identify the values of n, p, and q that would be used for finding the mean and standard deviation for the number of subjects who develop headaches.

Consider a random variable “x” follows binomial distribution with sample size “n” and proportion “p”.

i,e.X B(n, p)

Where,

n = 270 and p = 0.07.

q = 1 - p

   = 1 - 0.07.

   = 0.93

Probability mass function of binomial distribution is given by

P(x) = , x = 0,1,2,...,n.

With mean E(x) = np and variance var(x) = npq

Consider,

E(x) = np

        = 2700.07

 ...

Step 2 of 3

Chapter 5.4, Problem 1BSC is Solved
Step 3 of 3

Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

Since the solution to 1BSC from 5.4 chapter was answered, more than 430 students have viewed the full step-by-step answer. The answer to “Notation In a clinical trial of the cholesterol drug Lipitor, 270 subjects were given a placebo, and 7% of them developed headaches. For such randomly selected groups of 270 subjects given a placebo, identify the values of n, p, and q that would be used for finding the mean and standard deviation for the number of subjects who develop headaches.” is broken down into a number of easy to follow steps, and 60 words. This full solution covers the following key subjects: subjects, placebo, given, headaches, lipitor. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. The full step-by-step solution to problem: 1BSC from chapter: 5.4 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. Elementary Statistics was written by and is associated to the ISBN: 9780321836960.

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Notation In a clinical trial of the cholesterol drug

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