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or Charles | | Mail-Trevor Perry-Ou ) Do Homework - Trevor Perry - Google Chrome Secure ! https://wwww.mat aspx rkld-4599 7611 6&questionld;: 1 &flushed; = false&cld-47247; 30¢erwinzyes; lll Apps Bookmarks : atlab | Pearson TUESDAY I THURSDAY STT 315 Trevor Perry | 11/13/17 5:51 PM Chegg. Homework: Home work 10 - Chapter 6.3-6.4 Score: 0 of 1 pt 6.3-6 Save 3 of 21 (1 complete HW Score: 2.5%, 1 of 40 pts Question Help You are interested in purchasing a new car. One of the many points you wish to consider is the resale value of the car after 5 years. Since you are particularly interested in a certain foreign sedan. you decide to estimate the resale value of this car with a 90% confidence interval. You manage to obtain data on 17 recently resold 5-year-old foreign sedans of the same model. These 17 cars were resold at an average price of $12,370 with a standard deviation of $700. Suppose that the interval is calculated to be(1207412666). How could the sample size and the confidence coefficient be altered in order to guarantee a decrease in the width of the interval? A. Increase the sample size and increase the confidence coefficient B. Decrease the sample size but increase the confidence coefficient. ° C. Keep the sample size the same but increase the confidence coefficient. O D. Increase the sample size but decrease the confidence coefficient. My Ques ESTION or Charles Vor Charles click to select your answer and then cick Check Answer scnption ember 10) All parts showing Clear All Final Check Vor Charles Do Homework . Trevor Perry-Goog Answered 10/17/2017 TUTORS CHAT 5:51 PM 11/13/2017Explanation / Answer
As we increase the sample size, the width of confidence interval gets decreased.
As we decrease the level of confidence, the width of confidence interval gets decreased.
Hence,
Option D is correct.
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