Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).
<h3>What is a t-distribution confidence interval?</h3>
The confidence interval is:

In which:
is the sample mean.
- s is the standard deviation for the sample.
The critical value, using a t-distribution calculator, for a two-tailed <em>95% confidence interval</em>, with 49 - 1 = <em>48 df</em>, is t = 2.0106.
Hence:


The 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).
More can be learned about the t-distribution at brainly.com/question/16162795
Explanation:
Add 4/3 to both sides and then do cross multiplying
One step which the employer or the owner of the power line must deenergize or ground the power line. Other than that, other protective measures must be taken before work begins.
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Angle-Angle similarity theorem
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Then the two triangles must be congruent by Angle-Angle similar theorem.
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where is the image
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how can we know the answer