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3 years ago

7

Tracy is running in a 5.52 kilometer race on Saturday . A marathon is approximately 42 kilometers. How long will it take Tracy t

o race in the martathin? Can you show u please show your answer?

1 answer:

nika2105 [10]3 years ago

3 0

Answer:

about 7.6 days long

Step-by-step explanation:

42 divided by 5.52 = about 7.6

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The confidence interval can be calculated from the margin of error, and vice versa,

The margin of error of the confidence interval is 2.156

The confidence interval is given as:

$\mathbf{CI = 3.2 \pm 1.96 \cdot 1.1}$

The formula of confidence interval is:

$\mathbf{CI = \bar x\pm E}$

Where E represents the margin of error.

So, by comparison:

$\mathbf{E = 1.96 \cdot 1.1}$

Multiply

$\mathbf{E = 2.156}$

Hence, the margin of error of the confidence interval is 2.156

Read more about margin of errors at:

brainly.com/question/13990500

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Alex

In order to calculate this, just divide 12 from 27
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Anna007 [38]

Answer:

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