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 psychologist is studying the effects of lack of sleep on the performance of various perceptual-motor tasks. After a given period of sleep deprivation, a measurement of reaction time to an auditory stimulus was taken for each of 36 adult male subjects. The reaction times (in seconds) are summarized as follows:x = 1.82, S=0.22. Find a 99% confidence interval for the mean reaction time for sleep-deprived male subject
Suppose that for an output analysis the confidence interval of average profit is calculated between A TL and B TL (B > A). If the goal profit value is D TL, under what condition it can be saidthat the goal is reached? a. A equals 0 b. B is greater than 0 c. B is greater than D d. A is greater than De. A is less than D
Find the 95% confidence interval for the percentage of leaky diapers in Example 4.4.4 assuming 400 diapers were tested and 20% were leaky. Note that it is 8 percentage points long.
Question 3 Express the confidence interval 25.7 % ± 4% in the form of a trilinear inequality. %
d) Construct a 90% confidence interval for Hcommunity college - Hno transfer to approximate the mean additional time it takes to complete a bachelor's degree if you begin in community college. The confidence interval is the range from to (Round to three decimal places as needed.)
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…
Medical research has shown that repeated wrist extensions beyond 20 degrees increase the risk of wrist and hand injuries. Each of 24 students at a university used a proposed new computer mouse design, and while using the mouse, each student's wrist extension was recorded. Data consistent with summary values given in a paper are given here. 27 22 29 24 27 27 25 25 24 24 24 25 28 25 24 28 27 26 31 25 28 27 27 25 USE SALT (a) Use these data to estimate the mean wrist extension for people using this new mouse design using a 90% confidence interval. (Round your answers to three decimal places.)
A researcher surveyed 12 men who lost their fathers earlier in their lives. His survey included the age of the subjects when their fathers died and their confidence that they would someday be happily married themselves (100 point scale – higher score = more confidence). The results are shown below. Mx=15 My =60 SSx=348 SSy=5198 SPxy=933 Age Confidence Rating 12 34 8 30 11 89 21 69 15 55 7 38 18 78 23 66 22 89 19 79 9 35 15 58 Can you estimate a confidence rating for a man who lost his father at 30 years old? Why or why not?
When finding the upper bound, UU, of a confidence interval given the lower bound, LL, and the margin of error, EE, we use the formula U=L+2EU=L+2E. Find the upper bound for the proportion of babies that are born preterm if the lower bound is L=0.364L=0.364 and the margin of error is E=0.176E=0.176. Round your answer to 3 decimal places.U=
1
A researcher surveyed 12 men who lost their fathers earlier in their lives. His survey included the age of the subjects when their fathers died and their confidence that they would someday be happily married themselves (100 point scale – higher score = more confidence). The results are shown below. Mx=15 My =60 SSx=348 SSy=5198 SPxy=933 Age Confidence Rating 12 34 8 30 11 89 21 69 15 55 7 38 18 78 23 66 22 89 19 79 9 35 15 58 The effect size is equal to _____________ . This means it is a ______________ effect.
Generally speaking, would you say that most people can be trusted? A random sample of n1 = 253 people in Chicago ages 18-25 showed that r1 = 41 said yes. Another random sample of n2 = 283 people in Chicago ages 35-45 showed that r2 = 74 said yes. Does this indicate that the population proportion of trusting people in Chicago is higher for the older group? Use α = 0.05. (a) What is the level of significance? What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.)(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)

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