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2 years ago

Find the slope of the line graph below?

Mathematics

2 answers:

pantera1 [17]2 years ago

6 0

-2 should be the answer

cestrela7 [59]2 years ago

3 0

Answer:

-2

Step-by-step explanation:

Slope if rise / run

So what you want to do is look for two points that are close to each other on the vertical (y axis). This case i'm going with the 7 and the 5

This would give you a rise of -2: since as it move downwards as it goes to the right. (y2 - y1, y2 = 5, y1 = 7 so 5-7 = -2)

Next take the same points but look at them on the horizontal (x axis) and see how long it takes for it to get to the same points.

it starts at -1 and ends at 0.

so run = 1: since it moves to the left (x2 - x1, x2=0, x1=-1, 0-(-1) = 1)

This makes your slope

-2 as you have (-2/1)

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1 year ago

A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25

GREYUIT [131]

Answer:

The upper limit of a 95% confidence interval for the population mean would equal 83.805.

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The standard deviation is the square root of the variance. Since the variance is 25, the sample's standard deviation is 5.

We have the sample standard deviation, not the population, so we use the t-distribution to solve this question.

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