MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A large-sample 98% confidence interval for the proportion of hotel reservations that are canceled on the intended arrival day is (0.048, .112). What is the point estimate for the proportion of hotel reservations that are canceled on the intended arrival day from which this interval was constructed?
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- Identify the t- scores for a 99% confidence interval if the sample size is 70?arrow_forwardSuppose a 90 percent confidence interval to estimate a population proportion was calculated from a sample proportion of 18 percent and a margin of error of 4 percent. What is the width of the confidence interval?arrow_forwardSuppose we know that a confidence interval for a population proportion is (0.105,0.355), with a sample proportion of p̂=0.23. What is the margin of error?arrow_forward
- A study of 30 college students showed that 25 are binge watching series. Find a 95% confidence interval for the proportion of students that are binge watching series.arrow_forwardIn a survey of 1798 US adults, 1365 said they had paid a bill online within the past year. What is the LOWER endpoint of a 90% confidence interval for the population proportion? What is the UPPER endpoint of a 90% confidence interval for the population proportion?arrow_forwardSuppose you calculate a 99% confidence interval of 14.71 to 21.64. Determine the margin of error.arrow_forward
- From the estimation of the number of aggravated assault (816,760) in 2015 at a 99% confidence interval, what is the lower limit?arrow_forwardA random sample of high school seniors were asked whether they were applying for college. The resulting confidence interval for the proportion of students applying for college is (0.65,0.69). What is the margin of error?arrow_forwardImagine that you obtain a random sample of 125 M&M candies, and you notice that 28% of these candies are blue. If we convert the sample percentage of 0.28 to a sample proportion (by dividing 28 by 100), we get 0.28.arrow_forward
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