Answer the following question about this study. Use the applet above, if necessary.Find the 90% confidence interval the statistics class is looking for.(3.48, 4.38)(3.03, 4.53)(3.18, 4.68) According to the website www.collegedrinkingprevention.gov, "About 25 percent of college students report academic consequences of theirdrinking including missing class, falling behind, doing poorly on exams or papers, and receiving lower grades overall." A statistics student iscurious about drinking habits of students at his college. He wants to estimate the mean number of alcoholic drinks consumed each week bystudents at his college. He plans to use a 90% confidence interval. He surveys a random sample of 71 students. The sample mean is 3.93alcoholic drinks per week. The sample standard deviation is 3.78 drinks.Let's do some exploration with technology to see how changes in the confidence level affect the confidence interval. Use the applet below toanswer the following questions.-♡Central probability = 0.50-ŅAt-score = 0.6750central probability =degrees of freedom =N0.5050-♡2₂3

Sample size (n) = 71Sample mean (x̅) = 3.93Standard deviations (s) = 3.78 Confidence level (c) =…

Answered: According to the website…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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With the introduction of On-Demand Television, such as Netflix, OSN Play, Shahid, Watch it, etc…, media producers will eventually have to start producing and broadcasting their shows in this new digital standard. Al-Nahar, trying to decide on their own strategy, conducted a poll in major Arabic cities and found that 39 out of 200 households was likely to purchase a streaming service within the next year and a half.(a) Give an estimate and a 90% confidence interval for the true proportion of Arabic households in major cities that are likely to purchase a streaming service over the next year-and-a-half period.(b) Al-Nahar’s strategy is to proceed with a substantial investment in new technology if they are at least 90% confident that the true proportion estimated using their poll is above 17%. Based on this strategy, will Al-Nahar proceed with this investment?(c) Based on this preliminary estimate they wanted to conduct a more extensive poll in order toincrease the accuracy of their…
A doctor claims that the mean number of hours of sleep that seniors in high school get per night differs from the mean number of hours of sleep college seniors get per night. To investigate, he selects a random sample of 50 high school seniors from all high schools in his county. He also selects a random sample of 50 seniors from the colleges in his county. He constructs a 95% confidence interval for the true mean difference in the number of hours of sleep for seniors in high school and seniors in college. The resulting interval is (0.57, 1.25). Based upon the interval, can the doctor conclude that mean number of hours of sleep that seniors in high school get per night differs from the mean number of hours of sleep college seniors get per night? yes because 1 is in the confidence interval yes because 0 is not in the confidence interval no because 1 is in the confidence interval no because 0 is not in the confidence interval
A food snack manufacturer samples 9 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 15.2 oz. and the sample standard deviation is 0.50 oz., find the 95% confidence interval of the true mean.
Suppose a different police department says their SRS resulted in a 95% confidence interval of 10.1% to 15.1%. What is their point estimator and margin of error?
In an October 2003 poll conducted by the Gallup Organization, 684 of 1006 randomly selected adults aged 18 years old or older stated they think the government should make partial birth abortions illegal, except in cases necessary to save the life of the mother. Obtain a point estimate for the proportion of adults aged 18 or older who think the government should make partial birth abortions illegal, except in cases necessary to save the life of the mother. Construct a 95% confidence interval for the proportion of adults aged 18 or older who think the government should make partial birth abortions illegal, except in cases necessary to save the life of the mother. Interpret the interval.
In a controlled and scientifically valid study of sleeping pills, 40 people who took Pill A averaged 7.5 hours of sleep, with a standard deviation of 1.5 hours, while 40 people who took Pill B averaged 8 hours of sleep, with a standard deviation of 2 hours. Is there enough evidence to support the assertion that Pill B is more effective than Pill A to a 95% confidence interval? Explain.
It is believed that large doses of acetaminophen (the active ingredient in over the counter pain relievers like Tylenol) may cause damage to the liver. A researcher wants to conduct a study to estimate the proportion of acetaminophen users who have liver damage. For participating in this study, he will pay each subject $20 and provide a free medical consultation if the patient has liver damage. a) If he wants to limit the margin of error of his 95% confidence interval to 1%, what is the minimum amount of money he needs to set aside to pay his subjects?
Adults are spending more and more time on the Internet, and the number experiencing computer-based or Internet-based crime is rising. A 2018 Gallup Poll of 1019 adults, aged 18 and older, found that 723 of those in the sample said that they worry about having their personal, credit card, or financial information stolen by computer hackers. Although the samples in national polls are not SRSs, they are similar enough that our method gives approximately correct confidence intervals. Explain in words what the parameter p is in this setting ? Use the poll results to give a 95% confidence interval for p.
Principal Patty claims that less than 10% of high school students have been cyberbullied. Based on your calculated confidence interval, is she correct?
Find a credible journal article or website where confidence intervals were used to make informed decisions regarding a real world application
calculate a 95% confidence interval for the proportion of U.S residents who feel that the united states is on the right track in terms of its foreign policy if a random sample of 400 such residents had 148 respond yes
In an October 2003 poll conducted by the Gallup organization, 684 of 1006 randomly selected adults aged 18 or older stated they think the government should make partial birth abortions illegal, except in cases necessary to save the mother. construct a 95 percent confidence interval for the proportion of adults 18 and older who think the government should make partial birth abortions illegal, except in cases necessary to save the mother and interpret the interval.

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