One hundred fourty two general practitioners attend a healthpromotion workshop. At the start of the workshop they are asked toindicate whether they are in favour of routinely asking patients aboutalcohol consumption. They are then shown a video on the health andsocial problems caused by the excessive consumption of alcoholicdrinks. The video is followed by discussion in small groups. After thevideo and discussion they are asked the original question again. Dothe results given below indicate a significant change in attitudes as aresult of the video and group discussion?Before video and DiscussionIn favourAgainstAfter video and dicussion in favour4127Against1658

Answered: One hundred fourty two general…

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 recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the national percent. Suppose that a survey of 100 local seniors and 100 national seniors is conducted to see if the proportion of drug and alcohol use is higher locally than nationally. Locally, 66 seniors reported using drugs or alcohol within the past month, while 62 national seniors reported using them. Conduct a hypothesis test at the 5% level. State the distribution to use for the test. What is the p-value?
Answer it correctly and explain well. I will rate accordingly.
Twenty-nine college students, identified as having a positive attitude about Mitt Romney as compared to Barack Obama in the 2012 presidential election, were asked to rate how trustworthy the face of Mitt Romney appeared, as represented in their mental image of Mitt Romney’s face. Ratings were on a scale of 0 to 7, with 0 being “not at all trustworthy” and 7 being “extremely trustworthy.” Here are the 29 ratings: 2.6 3.2 3.7 3.3 3.4 3.6 3.7 3.8 3.9 4.1 4.2 4.9 5.7 4.2 3.9 3.2 4.5 5.0 5.0 4.6 4.6 3.9 3.9 5.3 2.8 2.6 3.0 3.3 3.7 a 95% confidence interval for the mean rating. Is there significant evidence at the 5% level that the mean rating is greater than 3.5 (a neutral rating)?
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Please assist and answer questions a, b, c, d, e, f Thank you.
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