Cars Problem An experiment is conducted to determine if there is a difference between the mean prices of US and Japanese cars. Question 12 This question relates to the Cars Problem. The presented data represents the results of a sample of American and Japanese cars. US Cars Number of Observations 249 Mean 20.14 6.41 Japanese Cars Number of Observations 79 Mean 30.48 6.11 Construct a 85% confidence interval for the difference of the population means of American and Japanese cars. The lower end of the confidence interval is (provide your answer to 3 decimal places):

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Cars Problem
An experiment is conducted to determine if there is a difference between the mean prices of US and
Japanese cars.
Question 12
This question relates to the Cars Problem.
The presented data represents the results of a sample of American and Japanese cars.
US Cars
Number of Observations
249
Mean
20.14
6.41
Japanese Cars
Number of Observations
79
Mean
30.48
6.11
Construct a 85% confidence interval for the difference of the population means of American and
Japanese cars.
The lower end of the confidence interval is (provide your answer to 3 decimal places):
Transcribed Image Text:Cars Problem An experiment is conducted to determine if there is a difference between the mean prices of US and Japanese cars. Question 12 This question relates to the Cars Problem. The presented data represents the results of a sample of American and Japanese cars. US Cars Number of Observations 249 Mean 20.14 6.41 Japanese Cars Number of Observations 79 Mean 30.48 6.11 Construct a 85% confidence interval for the difference of the population means of American and Japanese cars. The lower end of the confidence interval is (provide your answer to 3 decimal places):
This question relates to the Cars Problem.
Suppose that you computed the confidence interval (1.2, 2.4) in the previous question. Would you
reject the null hypothesis that the two proportions are equal?
We fail to reject the null hypothesis
O We would reject the null hypothesis
Transcribed Image Text:This question relates to the Cars Problem. Suppose that you computed the confidence interval (1.2, 2.4) in the previous question. Would you reject the null hypothesis that the two proportions are equal? We fail to reject the null hypothesis O We would reject the null hypothesis
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