A regression was run to determine if there is a relationship between hours of TVwatched per day (x) and number of situps a person can do (y).The results of the regression were:ŷ = a + bxa = 36.694b =0.874R == 0.923521a) Use this to predict the number of situps a person who watches 0.5 hours of TV cane do (to 3 decimal places)b) What is the value of the correlation coefficient (to 3 decimal places) ?PrivTerrост21MacBook ProescF1F2F3F4F5

Giveny^=a+bxa=36.694b=-0.874 R2=0.923521

Answered: A regression was run to determine if…

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 regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y). The results of the regression were: y=ax+b a=-0.624 b=35.132 r2=0.494209 r=-0.703 Use this to predict the number of situps a person who watches 9 hours of TV can do (to one decimal place)
A regression was run to determine if there is a relationship between hours of study per week (xx) and the final exam scores (yy).The results of the regression were: y=ax+b a=5.218 b=34.15 r2=0.3969 r=0.63 Use this to predict the final exam score of a student who studies 9.5 hours per week, and please round your answer to a whole number.
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y). The results of the regression were: y=ax+b a=-0.797 b=33.913 r2=0.373321 r=-0.611 Use this to predict the number of situps a person who watches 8 hours of TV can do (to one decimal place)
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y).The results of the regression were: y=ax+b a=-0.634 b=30.709 r2=0.948676 r=-0.974 Use this to predict the number of situps a person who watches 10.5 hours of TV can do (to one decimal place)
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Problem Suppose the number of beds in a sample of 12 private hospitals and 15 public hospitals were collected and given below. Private Public 195 180 185 173 262 166 232 160 135 194 244 174 162 167 207 297 180 127 221 150 137 151 180 145 254 204 210 a. Compute and interpret the mean, median, and the mode number of beds in the sample of private hospitals. Do the same for public hospitals. Compare private and public hospitals in terms of their average number of beds. Which measure of central tendency is appropriate to use? Explain. b. Combining private and public hospitals, what is the combined mean, median, and mode? Interpret these statistics. c. Compute the 5th percentile, 3rd quartile. Interpret each statistic.
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y).The results of the regression were:y=ax+b a=-1.309 b=28.368 r2=0.4096 r=-0.64 Use this to predict the number of situps a person who watches 3 hours of TV can do (to one decimal place)
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y).The results of the regression were:y=ax+b a=-0.7 b=32.521 r2=0.758641 r=-0.871 Use this to predict the number of situps a person who watches 2 hours of TV can do (to one decimal place)
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