Here is a scatter plot for a set of paired data. Which of the following options is the best estimate for the correlation coefficient? -0.95 -0.4 O0.4 O0.95 A regression analysis was performed to determine if there is a relationship between hours of TV watched per day (x) and number of sit ups a person can do (y). Researchers looked at a large sample of data, with people who ranged from watching no TV at all to watching nine hours per day. The results they found were: r = - 0.933 0.689a + 26.805 a) Use this to predict the number of sit ups a person who watches 3.5 hours of TV can do. We predict that they can do sit ups. b) For what values of hours of TV watched per day will this regression line not provide good predictions of how many sit ups a person can do? Explain your reasoning.

Here is a scatter plot for a set of paired data. Which of the following options is the best estimate for the correlation coefficient? -0.95 -0.4 O0.4 O0.95 A regression analysis was performed to determine if there is a relationship between hours of TV watched per day (x) and number of sit ups a person can do (y). Researchers looked at a large sample of data, with people who ranged from watching no TV at all to watching nine hours per day. The results they found were: r = - 0.933 0.689a + 26.805 a) Use this to predict the number of sit ups a person who watches 3.5 hours of TV can do. We predict that they can do sit ups. b) For what values of hours of TV watched per day will this regression line not provide good predictions of how many sit ups a person can do? Explain your reasoning.

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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