MATH 225N WEEK 6 CONFIDENCE INTERVALS QUESTIONS AND ANSWERS
Chamberlian School of Nursing
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Exam (elaborations) MATH 225N Week 6 Confidence Intervals Questions and Answers
- Exam (elaborations) • 20 pages • 2021
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1. On a busy Sunday morning, a waitress randomly sampled customers about their preference for morning 
beverages, Specifically, she wanted to find out how many people preferred coffee over tea. The proportion 
of customers that preferred coffee was 0.42 with a margin of error 0.07. 
Construct a confidence interval for the proportion of customers that preferred coffee. 
(0.42 - 0.07), (0.42 + 0.07) = (0.35), (0.49) 
2. A company sells juice in 1quart bottles. In a quality control test, the compan...
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