They randomly survey 384 drivers and find that 297 claim to always buckle up. Construct a 99% confidence interval for the population proportion that claim to always buckle up. < Select an answer p σ² μ x̄ p̂ s s² σ <
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Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 384 drivers and find that 297 claim to always buckle up.
Construct a 99% confidence interval for the population proportion that claim to always buckle up.
< Select an answer p σ² μ x̄ p̂ s s² σ <
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- A random sample of 100 employees at a company shows that 62 are female. Form a 90% confidence interval for the proportion of all employees who are female. The interval is 0.62 what margin of error? Round your answer to 3 decimal places.Out of 100 people sampled, 82 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places.The university surveyed 500 students and found that 150 of the students surveyed watch more than 5 hours of Netflix monthly. Develop a 90 percent confidence interval to estimate the true proportion of students who watch more than 5 hours of television each week. What is the confidence interval?Construct a 96% confidence interval if x=75 and n=200. Round your answers to 3 decimal places.Out of 300 people sampled, 66 had kids. Based on this, construct a 99% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places.A 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?Out of 400 people sampled, 368 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to four places< p <Out of 300 people sampled, 219 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places.Out of 600 people sampled, 528 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to four placesIn a sample of 360 adults, 266 had children. Construct a 95% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three placesA baseball team claims that the mean length of its games is more than 1.4 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. A. The null hypothesis expressed in words is, "the mean length of a baseball team's games is not 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≠1.4." B. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at least 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≥1.4." C. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≤1.4." D. The null hypothesis expressed in words is, "the mean length of a…In a sample of 510 adults, 281 had children. Construct a 95% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three placesRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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