Question 6 1 pts The straigh-line model, Ely) Bo+B1x, where y exam score (rangin

Question

Question 6 1 pts The straigh-line model, Ely) Bo+B1x, where y exam score (ranging from 0 to 100 points) and x- amount paid to a tutor (dollars) yielded the following prediction equation: y-hat 65+ 2x Interpret the value of R-Square = .45 that we found on the Statistix printout 0 we can explain 45% of the variation in the sample exam scores around their mean by using tutor expense in a linear model. we are 95% confident that there is a significant positive linear relationship between exam score and tutor expense. O For every $1 increase in tutor expense, we expect the exam score to increase by 45 points O We expect most of the sampled exam score to fall within.90 points of their least squares predicted values D Question 7 1 pts F4 FS F7 F8

Explanation / Answer

as coeffiicent of determination R2 is a measure of explained variation

correct option is : we can explain 45% of the variation in the sample exam scores around their mean by using expense in a linear model.

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