In a random sample of 200 people, 74% of them said that they do go to Truecar.com before they go shopping for a vehicle.    Step 1 of 1:  Determine a 90% confidence interval for the true proportion of people who do consult Truecar.com before shopping for a vehicle.   A) 0.688 to 0.792 (to three decimal places)  B) 0.689 to 0.791 (to three decimal places) C) 0.690 to 0.790 (to three decimal places) D) 0.691 to 0.789  (to three decimal places)   Step 2 of 2: Determine a 99% confidence interval for the true proportion of people who do consult Truecar.com before shopping for a vehicle. A) (0.662, 0.822) B) (0.661, 0.821) C) (0.663, 0.823) D) (0.660, 0.820)

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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In a random sample of 200 people, 74% of them said that they do go to Truecar.com before they go shopping for a vehicle. 
 
Step 1 of 1: 
Determine a 90% confidence interval for the true proportion of people who do consult Truecar.com before shopping for a vehicle.
 
A) 0.688 to 0.792 (to three decimal places) 
B) 0.689 to 0.791 (to three decimal places)
C) 0.690 to 0.790 (to three decimal places)
D) 0.691 to 0.789  (to three decimal places)
 
Step 2 of 2: Determine a 99% confidence interval for the true proportion of people who do consult Truecar.com before shopping for a vehicle.
A) (0.662, 0.822)
B) (0.661, 0.821)
C) (0.663, 0.823)
D) (0.660, 0.820)
 
 
 
 
 
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