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timurjin [86]
1 year ago
12

Write the equation of the line of best fit using the slope-intercept formula y=mx+b. Show all your work, including the points us

ed to determine the slope and how the equation was determined.

Mathematics
1 answer:
Colt1911 [192]1 year ago
5 0

The equation of the line of best fit using the slope-intercept formula y=mx+b is y = x - 5

<h3>Equation of the line of best fit</h3>

A line is the shortest distance between two points. The equation in point-slope form is expressed as:

y =. mx + b

m is the slope

b is the y intercept

Using the coordinate points (25, 20) and (60, 55)

Slope = 55-20/60-25
Slope = 35/35
Slope = 1

For the intercept

20 = 1(25) + b

b = 20 - 25

b = -5

Substitute

y = x + (-5)

y = x - 5

Hence the equation of the line of best fit using the slope-intercept formula y=mx+b is y = x - 5

Learn more on line of best fit here: brainly.com/question/17013321

#SPJ1

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The number of years of education of self-employed individuals in the united states has a population mean of 13.6 years and a pop
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μ = 13.6

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So now we have some notation, where μ represents population mean and σ represents population standard deviation. Hopefully, you already know that the sample mean of x-bar is the same as the population mean, so x-bar = 13.6. Now, the question asks us what the standard deviation is. Since the sample here is random, we can use the Central Limit Theorem, which allows us to guess that a distribution will be approximately normal for large sample sizes (that is, n ≥ 30). In this case, our sample size is 100, so that is satisfied. We're also told our sample is random, so we're good there, too. Now all we have to do is plug some stuff in.

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So your answer here is .3 years.

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