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gizmo_the_mogwai [7]
3 years ago
12

Four students in Ms. Alton's class shared the correlation coefficients derived from their data as follows: Student A: r = –0.87

Student B: r = –0.78 Student C: r = 0.79 Student D: r = 0.86 Whose data had the strongest correlation? Student A Student B Student C Student D
Mathematics
2 answers:
faltersainse [42]3 years ago
8 0

Answer:

Student A

Step-by-step explanation:

just did the assignment

Ostrovityanka [42]3 years ago
7 0

Answer:

student A

Step-by-step explanation:

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<h3>▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪</h3><h3 /><h3><u>Question</u> : 14</h3>

let's solve for f :

  • \dfrac{1}{f}  =  \dfrac{1}{a}  +  \dfrac{1}{b}

  • \dfrac{1}{f}  =  \dfrac{b + a}{ab}

Taking reciprocal of both sides :

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Find the equation of the line that passes through (1, -1) and is parallel to
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keeping in mind that parallel lines have exactly the same slope, let's check for the slope of the equation above

2x+y-3=0\implies y=\stackrel{\stackrel{m}{\downarrow }}{-2} x+3 \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}

so we're really looking for the equation of a line with a slope of -2 and that passes through (1 , -1)

(\stackrel{x_1}{1}~,~\stackrel{y_1}{-1})\qquad \qquad \stackrel{slope}{m}\implies -2 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-1)}=\stackrel{m}{-2}(x-\stackrel{x_1}{1}) \\\\\\ y+1=-2x+2\implies y=-2x+1

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sladkih [1.3K]
<h3>Answer:  18%</h3>

===========================================================

Explanation:

Convert each percentage to decimal form

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Then multiply the decimal values

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So there's an 18% chance that both events happen at the same time. In other words, there's an 18% chance of the temperature falling below zero and the bus being late.

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