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Refer to Exercise 4. Find a 99% lower confidence bound for

Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi ISBN: 9780073401331 38

Solution for problem 8E Chapter 5.2

Statistics for Engineers and Scientists | 4th Edition

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Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi

Statistics for Engineers and Scientists | 4th Edition

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Problem 8E

Refer to Exercise 4. Find a 99% lower confidence bound for the proportion of HIV-positive smokers who have used a nicotine patch.

Step-by-Step Solution:

Answer:

Step 1 of 3:

       Here our aim is to find a 99% lower confidence bound for the proportion of HIV- positive smokers who have used a nicotine.

 Step  2 of 3: 

         Let X = The number of  HIV- positive smokers who have used a nicotine.

 Therefore,

    Where, the sample size n = 444,  X = 170.      

A 99% lower confidence bound for ‘p’ is given by

             

                           Where,

                                           = 444 + 4

                                           = 448.

                        

                                        =

                                     

                                         = 0.3839

    Here we have to find 99% confidence interval, let.

Now,

 ...

Step 2 of 3

Chapter 5.2, Problem 8E is Solved
Step 3 of 3

Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

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Refer to Exercise 4. Find a 99% lower confidence bound for

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