5.21 A study was conducted of 90 adult male patients following a new treatment for congestiveheart failure. One of the variables measured on the patients was the increase in exercise capacity(in minutes) over a 4-week treatment period. The previous treatment regime had producedan average increase of u = 2 minutes. The researchers wanted to evaluate whether the newtreatment had increased the value of u in comparison to the previous treatment. The data yieldedy = 2.17 and s = 1.05.a. Using a = .05, what conclusions can you draw about the research hypothesis?b. What is the probability of making a Type II error if the actual value of u is 2.1? QUESTION 45.21a: Select the correct reason and conclusionHint: See L-11 pdf and lecture, page 7-8O 1. Zob = 1.54<1.645 = z0.05 --> fail to reject Ho. There is significant evidence to support the hypothesis that the mean has increased from 2.O II. Zob = 1.54<1.645 = z0.05 --> reject Ho. There is significant evidence to support the hypothesis that the mean has increased from 2.O III.zob = 1.74<1.645 = z0.05 --> reject Ho. There is significant evidence to support the hypothesis that the mean has increased from 2.= 1.54 1.645 = Z0.05 --> fail to reject Ho. There is not significant evidence to support the hypothesis that the mean has increased from 2O N.Zob

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Answered: 5.21 A study was conducted of 90 adult…

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 special education teacher did research on whether or not there is a relationship between the number of students in his class and the number incidents of “acting out” behaviors exhibited by the autistic students in the classroom. He collects data for a year and aggregates them by month. He obtained the statistics below, r= -.863 R2=.74 b= -1.212294 a= 131.176598 10.) How does the presence of more students affect the incidents in the class? a) as students are added the incidences increase b) as students are added the incidences decrease c) the number of students does not affect acting out d) the number of students caused more incidents How much of the variability of acting out is explained by the number of students in the class?___________
The Cadet is a popular model of sport utility vehicle, known for its relatively high resale value. The bivariate data given below were taken from a sample of fifteen Cadets, each bought new two years ago, and each sold used within the past month. For each Cadet in the sample, we have listed both the mileage x (in thousands of miles) that the Cadet had on its odometer at the time it was sold used and the price y (in thousands of dollars) at which the Cadet was sold used. The least-squares regression line for these data has equation y = 40.86-0.45x. This line is shown in the scatter plot below. Mileage, x (in thousands) 29.7 27.8 26.8 24.2 21.1 23.0 24.3 15.4 37.7 23.6 34.4 27.8 23.5 20.9 259 Used selling price, y (in thousands of dollars) 27.4 29.4 31.2 30.1 31.7 31.7 27.2 34.2 23.4 28.2 26.3 26.5 33.7 30.6 267 Used selling price (in thousands of dollars) 40- 35+ 30- 25- 20 THIS 15 X 20 X X X 30 Mileagex (in thousands) X 35 40
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Can you please check my work
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Denny studied factors affecting cardiovascular reactivity to a postural change in a sample of healthy men and women. Change in systolic blood pressure (SBP) from supine to standing position was used as the measure of cardiac reactivity in a sample of 842 adults. Supine measurement of blood pressure was taken after participants had lain on an examination table for 15 minutes. Blood pressure was determined every 30 seconds using a Dinamap device for 2 minutes, and the measurements were averaged. Participants then stood up immediately, and additional measurements were made for another 2 minutes. Below is a table describing the characteristics of Denny’s sample: Which measures of dispersion, if any, are presented in this table (Ranges, SDs)? If age is normally distributed, approximately what percent of the sample would be younger than 50? If BMI is normally distributed, approximately what percent of the sample would have a BMI higher than 33.1?
A study was conducted of 90 adult male patients following a new treatment for congestive heart failure. One of the variables measured on the patients was the increase in exercise capacity (in minutes) over a 4-week treatment The previous treatment regime had produced an average increase of μ = 2 minutes. The researchers wanted to evaluate whether the new treatment had increased the value of μ in comparison to the previous treatment. The sample data yielded ?̅ = 2.17 and ? = 1.05: Using α = 05, what conclusions can you draw about the research hypothesis?

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