In order to earn a little extra money, Anna set up a lemonade stand on her block over the summer. Suspecting that there might be a relationship between the temperature and the amount of lemonade she sells, Anna recorded the day’s high temperature and the number of cups of lemonade she sold for $10$ days. After plotting her results, Anna noticed that the relationship between the two variables appeared fairly linear, so she used her data to calculate a least squares regression equation.
The figure below is a computer output of her regression results.
Predictor | Coef | SE Coef |T| P|
- | - | -
**Constant** | $-33.704$ | $0.134$ | $20.678$ | $0.000$
**Temperature**| $0.6012$| $0.057$| $4.0456$|$0.004$
$S=1.926\quad R\text{-}Sq=67.168\%\quad R\text{-}Sq (adj) = 60.581\%$
**Which of the following statements about the correlation $r$ for Anna's analysis is(are) true?**
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