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Assume that all variable are approximately normally

Elementary Statistics: A Step By Step Approach | 9th Edition | ISBN: 9780073534985 | Authors: Allan Bluman ISBN: 9780073534985 75

Solution for problem 6E Chapter 7.2

Elementary Statistics: A Step By Step Approach | 9th Edition

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Elementary Statistics: A Step By Step Approach | 9th Edition | ISBN: 9780073534985 | Authors: Allan Bluman

Elementary Statistics: A Step By Step Approach | 9th Edition

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Problem 6E

Assume that all variable are approximately normally distributed.

Digital Camera PricesThe prices (in dollars) for a particular model of digital camera with 6.0 megapixels and an optical 3X zoom lens are shown below for 10 online retailers. Estimate the true mean price for this particular model with 95% confidence.

225

240

215

206

211

210

193

250

225

202

Step-by-Step Solution:
Step 1 of 3

Solution 6E

Step1 of 3:

From the given problem we have a data set and it is given below:

225

240

215

206

211

210

193

250

225

202

We need to estimate the true mean price for this particular model with 95% confidence.

Step2 of 3:

1). The mean price of the particular model is obtained from excel by using the function:

“=Average(Select all data)”

2). The standard deviation of the particular model is obtained from excel by using the function:

“=Std(Select all data)”

3). We have,

           

     

Now,

   

       

Therefore,

The degrees of freedom is calculated by using the formula:

 

Step 2 of 3

Chapter 7.2, Problem 6E is Solved
Step 3 of 3

Textbook: Elementary Statistics: A Step By Step Approach
Edition: 9
Author: Allan Bluman
ISBN: 9780073534985

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Assume that all variable are approximately normally

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