Concept explainers
Study of aircraft bird-strikes. Refer to the International Journal for Traffic and Transport Engineering (Vol. 3, 2013) study of aircraft bird strikes at a Nigerian airport, Exercise 6.54 (p. 333). Recall that an air traffic controller wants to estimate the true proportion of aircraft bird strikes that occur above 100 feet. Determine how many aircraft bird strikes need to be analyzed to estimate the true proportion to within .05 if you use a 95% confidence interval.
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Statistics for Business and Economics Plus MyLab Statistics with Pearson eText -- Title-Specific Access Card Package (13th Edition)
Additional Math Textbook Solutions
Business Analytics
Statistical Techniques in Business and Economics
Research Methods for the Behavioral Sciences (MindTap Course List)
Statistical Reasoning for Everyday Life (5th Edition)
Developmental Mathematics (9th Edition)
- What is meant by the sample space of an experiment?arrow_forwardIn a study of the accuracy of fast food drive-through orders, Restaurant A had 263 accurate orders and 55 that were not accurate. a. Construct a 95%confidence interval estimate of the percentage of orders that are not accurate. b. Compare the results from part (a) to this 95% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.152 <p<0.231. What do you conclude?arrow_forwardIn a study of the accuracy of fast food drive-through orders, Restaurant A had 281 accurate orders and 52 that were not accurate.a. Construct a 95% confidence interval estimate of the percentage of orders that are not accurate.b. Compare the results from part (a) to this 95% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.138<p<0.217. What do you conclude?arrow_forward
- An environmental science teacher at a high school with a large population of students wanted to estimate the proportion of students at the school who regularly recycle plastic bottles. The teacher selected a random sample of students at the school to survey. Each selected student went into the teacher’s office, one at a time, and was asked to respond yes or no to the following question. Based on the responses, a 95 percent confidence interval for the proportion of all students at the school who would respond yes to the question was calculated as (0.584, 0.816 ). (b) Given the method used by the environmental science teacher to collect the responses, explain how bias might have been introduced and describe how the bias might affect the point estimate of the proportion of all students at the school who would respond yes to the question.arrow_forwardAn environmental science teacher at a high school with a large population of students wanted to estimate the proportion of students at the school who regularly recycle plastic bottles. The teacher selected a random sample of students at the school to survey. Each selected student went into the teacher’s office, one at a time, and was asked to respond yes or no to the following question. Based on the responses, a 95 percent confidence interval for the proportion of all students at the school who would respond yes to the question was calculated as (0.584, 0.816 ). (a) How many students were in the sample selected by the environmental science teacher?arrow_forwardAn environmental science teacher at a high school with a large population of students wanted to estimate the proportion of students at the school who regularly recycle plastic bottles. The teacher selected a random sample of students at the school to survey. Each selected student went into the teacher’s office, one at a time, and was asked to respond yes or no to the following question. Based on the responses, a 95 percent confidence interval for the proportion of all students at the school who would respond yes to the question was calculated as (0.584, 0.816 ). (c) The statistics teacher at the high school was concerned about the potential bias in the survey. To obtain a potentially less biased estimate of the proportion, the statistics teacher used an alternate method for collecting student responses. A random sample of 300 students was selected, and each student was given the following instructions on how to respond to the question. • In private, flip a fair coin. • If heads, you…arrow_forward
- College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning