2 years ago

2) Jenna earned $375 for 25 hours of work. At this rate, how much would she earn for 35

Mathematics

1 answer:

alukav5142 [94]2 years ago

3 0

Answer:

525

Step-by-step explanation:

she is making $15 an hour so if you times 35 and 15 you get 525

mark as brainliest please !!!!

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Karo-lina-s [1.5K]

Answer:

a. Pearson Correlation

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Step-by-step explanation:

a. Pearson Correlation

Using the equation for Pearson correlation:

$r = \frac{SP}{\sqrt{(SS_{x} * SS_{y})} }$

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$r=\frac{10}{\sqrt{1600} }$

$r=\frac{10}{40} =\frac{1}{4} = 0,25$

b. Regression

Using regression equation

1. $Y = a+ b *X$

2. $a= m_{y} - b* m_{x}$

3. $b= \frac{SP}{SS_{x} }$

So replacing first 'b' because is content in 'a' equation

$b= \frac{SP}{SS_{x} }$

$b= \frac{10}{20}$

$b= \frac{1}{2} = 0,5$

Knowing 'b' can know 'a' and complete the equation

$a= m_{y} - b* m_{x}$

$a= 10 - 0,5* 8$

$a= 6$

Replacing in the equation 1:

1. $Y = a+ b *X$

$Y = 6+ 0,5 *X$

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