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If the standard deviation is 9 and sample size is 100 then the standard error is 0.9.
Given that the mean is 80,standard deviation be 9 and sample size be 100.
We are required to find the standard error of the given data.
The standard error of a statistic is basically the standard deviation of its sampling distribution or an estimate of that standard deviation.
Standard error=σ/
in which σ is standard deviation and n is sample size.
Here standard deviation is 9 and sample size is 100.
Standard deviation=9/
=9/10
=0.9
Hence if the standard deviation is 9 and sample size is 100 then the standard error is 0.9.
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Using the slope concept, it is found that the shuttle traveled 3.2 miles while Marion was watching.
<h3>What is a slope?</h3>The slope is given by the <u>vertical change divided by the horizontal change</u>, and it's also the tangent of the angle of depression.
Initially, the angle of elevation is of 16º, with an elevation of 1 mi, hence:
Then, at the end, the angle will be of 74º, with the elevation remaining constant, hence:
The distance is:
The shuttle traveled 3.2 miles while Marion was watching.
More can be learned about the slope concept at brainly.com/question/18090623