If 25 falls inside the confidence interval, then you would fail to reject the null hypothesis and conclude there is insufficient evidence that true mean time spent on the graduation projects is significantly different than 25 hours
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- Suppose 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?Say that on average teenagers eat 10 slices of pizza each week, with a 95% confidence interval of (8-12). We take a sample of teenagers and find that this group eats an average of 6 slices each week. What can we say about the teenagers in the sample in relation to the confidence interval?The width of the confidence interval (mu1 - mu2) increases as s1 and s2 increase. True or False
- From the estimation of the number of aggravated assault (816,760) in 2015 at a 99% confidence interval, what is the lower limit?Two researchers, Jaime and Mariya, are each constructing confidence intervals for the proportion of a population who is lef-handed. They find the point estimate is 0.23. Each independently constructed a confidence interval based on the point estimate, but Jaime's interval has a lower bound of 0.220 and an upper bound of 0.234, while Mariya's interval has a lower bound of 0.169 and an upper bound of 0.272. Which interval is wrong? Why? 28 Choose the correct answer below. OA Jaime's interval is wrong because it does not include the point estimate. OB. Mariya's interval is wrong because it is too wide. OC. Mariya's interval is wrong because it is not centered on the point estimate, OD. Jaime's interval is wrong because it is to narrow O of 36In a sample of 300 adults, 198 had children. Construct a 90% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three places RectanAccording to a poll, 82% of California adults (417 out of 506 surveyed) feel that education is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education is one of the top issues facing California. 1.Find the error bound. (Round your answer to three decimal places.)The general form of a confidence interval is inferred asif a 95% confidence intervalgivess 0.20 and 0.27, can we be 95% that the proportion is 22% accurate or not because not all values are within 22%?Recommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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