A sleep disorder specialist wants to test the effectiveness of a new drug that is reported to increase the number ofhours of sleep patients get during the night. To do so, the specialist randomly selects 16 patients and records thenumber of hours of sleep each gets with and without the new drug. The accompanying table shows the results of theSdSdtwo-night study. Construct a 90% confidence interval for Hd, using the inequality d-t√ Hd Hours of SleepPatientHours of sleep(without the drug)Hours of sleep(using the drug)14 5 6 72 38 9 10 11 12 13 14 1516 D4.3 3.4 3.4 2.2 3.6 4.8 3.3 2.2 2.9 3.7 5.8 4.7 4.2 3.4 4.5 2.16.6 4.6 5.5 4.8 5.4 5.6 5.0 4.7 5.0 4.8 7.5 6.2 6.8 4.9 5.4 2.8

Answered: Image /qna-images/answer/0dd9024d-e18f-480b-b0b5-65bae83c3192.jpg

Answered: A sleep disorder specialist wants to…

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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A study regarding the proportion of students who finish their MS degree (graduate) is conducted in two universities (A and B). The results are shown in the following table.
A two-tailed hypothesis test for H0: μ = 20 at α = 0.10 is analogous to asking if a 90 percent confidence interval for μ contains 20: True False
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A newsgroup is interested in constructing a 90% confidence interval for the difference in the proportions of Texans and New Yorkers who favor a new Green initiative. Of the 531 randomly selected Texans surveyed, 354 were in favor of the initiative and of the 559 randomly selected New Yorkers surveyed, 460 were in favor of the initiative. a. With 90% confidence the difference in the proportions of Texans and New Yorkers who favor a new (round to 3 decimal places) and (round to 3 decimal Green initiative is between places). b. If many groups of 531 randomly selected Texans and 559 randomly selected New Yorkers were surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population proportion of the difference in the proportions of Texans and New Yorkers who favor a new Green initiative and about percent will not contain the true population difference in proportions.
The 2017 Chapman University Survey of American Fears asked a random sample of 1207 American aduts they believed that alens had come to Earth in modem times, and 20% responded yes. Complete parts (a) through (d) below a What es the standard emor tor ths estmate of the peroentage ot a Amencans who Deeve that aens have come to tam n mooern smes? Round to four decimal places as needed.) b. Find a 90% confidence interval for the proportion of all Americans who believe that alens have come to Earth in modem time (Round to two decimal places as needed.) c. What is the margin of error for the 0% confidence interval S (Round to two decimal places as needed) d Suppose that a similar poll conducted in 2016 found that 24.3% of Americans believed alens have come to Earth in modem imes. Baned on your cortdence interval, can you conclude that the proportion of Americans who believe this has increased sinoe 20107 OA. The interval does not support this claim. This is because 24.3% is not in the…
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Traumatic Brain Injuries have been shown to affect brain volume. A psychologist measures the brain volume of N=8 TBI patients at 2 months and 12 months after their injuries. Evaluate the results of her data using α = .052tail. **Attached Image** a. State the hypotheses b. Show how the t was calculated using the values from the SPSS printout. c. What is Cohen’s d?

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