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myrzilka [38]
3 years ago
12

Ana is working at her sister's pizzeria researching the preparation of different pizza dough recipes. A sample of 27 recipes rev

ealed the following information regarding the linear relationship between cost ($/lb) and preparation time (min).
Computer Regression Output for Preparation Time (min) vs. Cost ($/lb)

Predictor Coef SE Coef T P

Constant 18.7095 0.0634 295.31 0.0

Cost -3.9967 0.0384 -104.0 0.0

S = 0.033 R-Sq = 94.24% R-Sq (Adj) = 94.009%



a. Find the equation of the Least Squares Regression Line (LSRL).

b. Using an x-axis and y-axis, create a beautiful graph of the LSRL.

c. Calculate r, the correlation coefficient.
Mathematics
1 answer:
tino4ka555 [31]3 years ago
3 0

Answer:

after a doctor nice to meet you at the

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The sum of two numbers is 98 and the difference between them is 48. find the two numbers.
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Answer these 4 questions for brainliest! :)
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2 years ago
The graph of a proportional relationship contains the point (8, 4).
Softa [21]
\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\
(\stackrel{x}{8}~~,~~\stackrel{y}{4})\implies 
\begin{cases}
x=8\\
y=4
\end{cases}\implies 4=k8\implies \cfrac{4}{8}=k\implies \cfrac{1}{2}=k
\\\\\\
\boxed{y=\cfrac{1}{2}x}
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The cost of 40 candy bars is
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C) $20
40 divided by 30 is 1.3
1.3 times 15 is 30
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