A sleep disorder specialist wants to test the effectiveness of a new drug that is reported to increase the number of hours of sleep patients get during the night. To do so,the specialist randomly selects nine patients and records the number of hours of sleep each gets with and without the new drug. The results of the two-night study arelisted below. Using this data, find the 90 % confidence interval for the true difference in hours of sleep between the patients using and not using the new drug.Assume that the hours of sleep are normally distributed for the population of patients both before and after taking the new drug.PatientHours of sleep without the drugHours of sleep with the new drug15.48.12356 7 8 95.5 2.6 4.2 4.26.5 3.2 5.3 4.5 8 5.1 5.3 6.45.4 2.2 3.7 3.4Copy DataStep 1 of 4: Find the point estimate for the population mean of the paired differences. Let x₁ be the number of hours of sleep without the new drug and x2 be thenumber of hours of sleep with the new drug and use the formula d = x₂ - x₁ to calculate the paired differences. Round your answer to two decimal places.

From the provided information,n = 9Confidence level = 90%The difference d are as follow:d = x2 -…

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 marketing study with a random sample of 400 results in 160 subjects reacting positively to the proposed product. Determine the 95% confidence interval for the population proportion.
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