Refer to Exercise 1. Find a 95% lower confidence bound for

Chapter 5, Problem 6E

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QUESTION:

Refer to Exercise 1. Find a 95% lower confidence bound for the proportion of automobiles whose emissions exceed the standard.

Questions & Answers

QUESTION:

Refer to Exercise 1. Find a 95% lower confidence bound for the proportion of automobiles whose emissions exceed the standard.

ANSWER:

Answer:

Step 1 of 3:

        Here our aim is to find a 95% lower confidence bound for the proportion of automobiles whose emissions exceed the standard.


 Step  2 of 3:   

 

  Let X = The number of automobiles whose emissions exceed the standard.

 Therefore,

    Where, sample size n = 70,  X = 28.      

A 95% lower confidence bound for ‘p’ is given by

                    

 

                           Where,

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