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jasenka [17]
3 years ago
5

Sonya and Lucas walk from school to the library they walk 5 blocks south and 4 blocks west to get to the library if the school i

s located at a point (9,-1 ) on a coordinate map what are the map coordinates of l the library
Mathematics
1 answer:
Lelu [443]3 years ago
4 0

We are given coordinates of the school located at a point (9,-1).

Library is located 5 blocks south and 4 blocks west .

According to coordinate axes, south is downward and west is on left side.

So, we need to move 5 units down of 9.

<em>5 units down of 9 would be 9-5 = 4.</em>

And then <em>4 blocks west that mean -1 -4 = -5.</em>

<h3>Therefore, coordinate of the library is located at the point (4,-5).</h3>
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Answer:

The correct value of the Z-statistic is z = -1.56

Step-by-step explanation:

A company manufacturing computer chips finds that 8% of all chips manufactured are defective.

This means that the null hypothesis is:

H_{0}: p = 0.08

A hypothesis test is performed to determine if the additional training was effective in lowering the defect rate.

This means that the alternate hypothesis is:

H_{a}: p < 0.08

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z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

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0.08 is tested at the null hypothesis:

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