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2 years ago

How much higher is Checkpoint 5 than Checkpoint 2?

2 answers:

5 0

You have to find the difference in height between both checkpoints. To do this just calculate 196 - 52. Checkpoint 5 is 144 (meters?) higher than Checkpoint 2.

Lemur [1.5K]2 years ago

5 0

Answer:

Checkpoint 5 is 144 than Checkpoint 2

Step-by-step explanation:

The formula of distance between 2 Points is

Distance AB=√(x2−x1)²+(y2−y1)²

In this case, we only have x

Checkpoint 5 is -52

Checkpoint 2 is -196

√(x2−x1)²=√(-196−(-52))²=144

Distance AB=144

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Step-by-step explanation:

<h3>Given </h3>

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3 years ago

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2 years ago

A sample size of n = 64 is drawn from a population whose standard deviation is o = 5.6.

AlekseyPX

Answer:

The margin of error for a 99% confidence interval for the population mean is 1.8025.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem:

$\sigma = 5.6$

$M = 2.575*\frac{5.6}{\sqrt{64}} = 1.8025$

The margin of error for a 99% confidence interval for the population mean is 1.8025.

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2 years ago