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Suppose the linear regression line y=-0.3x+11.2 predicts the time, in minutes, it takes you to finish an obstacles course after training for x days. About how much time would it take you to finish the course after training for 5 days.

Suppose the linear regression line y03x112 predicts the time in minutes it takes you to finish an obstacles course after training for x days About how much time class=

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SOLUTION

From the equation, to find the time in minutes which is y, we plugging 5 (from 5 days) for x into the equation, we have

[tex]\begin{gathered} y=-0.3x+11.2 \\ y=-0.3(5)+11.2 \\ y=-1.5+11.2 \\ y=9.7\text{ minutes } \end{gathered}[/tex]

Hence the answer is option B

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