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Refer to Exercise 2. Find a 98% upper confidence bound for

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

Solution for problem 7E 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 7E

Refer to Exercise 2. Find a 98% upper confidence bound for the proportion of residences that reduced their water consumption.

Step-by-Step Solution:

Answer:

Step 1 of 3:

    Here our aim is to find a 98% upper confidence bound for the proportion of residences that  reduced their water consumption.


 Step  2 of 3:   

 

  Let X = The number of residences that  reduced their water consumption.

 Therefore,

    Where, the sample size n = 100,  X = 73.      

A 98% upper confidence bound for ‘p’ is given by

             

 

                           Where,

                                           = 100 + 4

                                           = 104.

                        

                                        =

                                        = 0.72115

   Then,

                              

         

From the statistical table the z-value for 98% confidence interval is 2.32.

                      =     

                      = 0.811.


 Step  3 of 3: 

 Conclusion:

              Therefore, a 98% upper confidence bound for the proportion of residences that  reduced their water consumption is 0.811.


 

Step 2 of 1

Chapter 5.2, Problem 7E is Solved
Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

Statistics for Engineers and Scientists was written by and is associated to the ISBN: 9780073401331. This textbook survival guide was created for the textbook: Statistics for Engineers and Scientists , edition: 4. The full step-by-step solution to problem: 7E from chapter: 5.2 was answered by , our top Statistics solution expert on 06/28/17, 11:15AM. This full solution covers the following key subjects: Bound, confidence, consumption, exercise, Find. This expansive textbook survival guide covers 153 chapters, and 2440 solutions. Since the solution to 7E from 5.2 chapter was answered, more than 282 students have viewed the full step-by-step answer. The answer to “?Refer to Exercise 2. Find a 98% upper confidence bound for the proportion of residences that reduced their water consumption.” is broken down into a number of easy to follow steps, and 20 words.

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Refer to Exercise 2. Find a 98% upper confidence bound for