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Jlenok [28]
3 years ago
11

Which inequality does this graph represent?

Mathematics
1 answer:
Neporo4naja [7]3 years ago
5 0

Based on the graph, the slope of the line is -1/2 because the slope is negative, as it is going down 1 unit and then 2 units to the left.

The y-intercept(b), where x = 0, is -1

So your equation is:

y ? -1/2x - 1

The shaded area is above the line, which means that y is greater than "-1/2x - 1"


The inequality is:

y ≥ -1/2x - 1

The answer is A

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A toy manufacturer wants to know how many new toys children buy each year. A sample of 1492 children was taken to study their pu
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By assuming the standard deviation of population 2.2 the confidence interval is 8.67 toys,8.94 toys.

Given sample size of 1492 children,99% confidence interval , sample mean of 8.8, population standard deviation=2.2.

This type of problems can be solved through z test and in z test we have to first find the z score and then p value from normal distribution table.

First we have to find the value of α which can be calculated as  under:

α=(1-0.99)/2=0.005

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corresponding z value will be 2.575 for p=0.995 .

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M=2.575*2.2/\sqrt{1492}

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So the lower value will be x-M

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The upper value will be x+M

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Hence the confidence interval will be 8.67 toys and 8.94 toys.

Learn more about z test at brainly.com/question/14453510

#SPJ4

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