Question

Hard question: Help required

Answer 1

POKEMON X

Answer 2

@monglimoo Why do you type unrelated comments on every question? .-.

Answer 3

Plug in your numbers to the formula.

Answer 4

I cant see that post @xMissAlyCatx

Answer 5

Oopsies..

Answer 6

ok give me a moment to figure this out

Answer 7

ok i cannot figure it out

Answer 8

@Michele_Laino

Answer 9

it is simple, since, according to the formula of @xMissAlyCatx we can compute the slope \(b\), as below:
\[\huge b = r\frac{{{s_y}}}{{{s_x}}} = 0.999 \cdot \frac{{0.718}}{{1.29}} = ...?\]

Answer 10

next, once you got the value of \(b\), we can write the equation of the line of best fit, using this formula:
\[\huge \begin{gathered}
y - \bar y = b\left( {x - \bar x} \right) \hfill \\
\hfill \\
y - 5.64 = b\left( {x - 1979.5} \right) \hfill \\
\end{gathered} \]

Answer 11

so, please what is the slope \(b\)?

Answer 12

one second please

Answer 13

=-1979.5x

Answer 14

I got this:
\[\huge b = r\frac{{{s_y}}}{{{s_x}}} = 0.999 \cdot \frac{{0.718}}{{1.29}} = 0.556\]
please check such value

Answer 15

so, after a substitution, we get:
\[\huge y - 5.64 = 0.556 \cdot \left( {x - 1979.5} \right)\]
please simplify such equation

Answer 16

ok so we have to do each equation?

Answer 17

I'm sorry I was confused at first I thought it was one equation. I understand now

Answer 18

ok i got 22.486

Answer 19

If I apply the distributive property of multiplication, over addition, at the right side, I write this:
\[\huge y - 5.64 = 0.556x - 1100.6\]

now, please add \(5.64\) to both sides, what do you get?

Answer 20

i got -1094.96

Answer 21

thats the correct answer