MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Which type of confidence interval should you use in this situation? A sample of 400 racing cars showed that 80 cars cost over $700,000. Find the 99% confidence interval of the true proportion of racing cars costing over $700,000.
 

Question 3 options:

 

1) 

a confidence interval for the mean using a table value from the standard normal distribution.
 

2) 

a confidence interval for the mean using a table value from the t distribution.
 

3) 

a confidence interval for a proportion using a table value from the standard normal distribution.
 

4) 

a confidence interval for proportion using a table value from the t distribution.
 

5) 

none of the above.
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