×
Log in to StudySoup
Get Full Access to Statistics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Statistics - Textbook Survival Guide

Standard Deviation For the binomial distribution described

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

Solution for problem 2BSC Chapter 5.4

Elementary Statistics | 12th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

4 5 1 339 Reviews
19
1
Problem 2BSC

Standard Deviation For the binomial distribution described by the conditions in Exercise 1, find the standard deviation by evaluating  Some books use the expression  for the standard deviation. Will that expression always yield the same result?

Exercise 1

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.

Step-by-Step Solution:
Step 1 of 3

Problem 2BSC

Answer:

Step1 of 3:

We have Standard Deviation For the binomial distribution described by the conditions in Exercise 1, find the standard deviation by evaluating Some books use the expression  for the standard deviation.

        “Yes”,this expression always yield the same result.

Step2 of 3:

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) = ,...

Step 2 of 3

Chapter 5.4, Problem 2BSC is Solved
Step 3 of 3

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

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Standard Deviation For the binomial distribution described

×
Log in to StudySoup
Get Full Access to Statistics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Statistics - Textbook Survival Guide
×
Reset your password