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:
![\overline{x} \pm t\frac{s}{\sqrt{n}}](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%20%5Cpm%20t%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D)
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:
![\overline{x} - t\frac{s}{\sqrt{n}} = 12.2 - 2.0106\frac{1.6}{\sqrt{49}} = 11.7](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%20-%20t%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D%20%3D%2012.2%20-%202.0106%5Cfrac%7B1.6%7D%7B%5Csqrt%7B49%7D%7D%20%3D%2011.7)
![\overline{x} + t\frac{s}{\sqrt{n}} = 12.2 + 2.0106\frac{1.6}{\sqrt{49}} = 12.7](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%20%2B%20t%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D%20%3D%2012.2%20%2B%202.0106%5Cfrac%7B1.6%7D%7B%5Csqrt%7B49%7D%7D%20%3D%2012.7)
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
The two ways that cinna's request to get brutus involved affect cassius are;
- B. Cinna's request makes Cassius ask him to take an incriminating letter to Brutus.
- C. Cinna's request makes Cassius trust him to return to Pompey's Theatre and meet Cassius there.
<h3>What are the lessons from a passage?</h3>
From the given passage, when Cinna says he wanted Brutus to join them, it propelled Cassius to ask Cinna to deliver a letter to Brutus. Now, this was very obvious when Cassius said "Be you content. Good Cinna, take this paper and look you lay it in the praetor’s chair, where Brutus may but find it. And throw this in at his window. Set this up with wax upon old Brutus’ statue."
Looking at the given options, and comparing with the summary above we can say that options B and C are correct
Read more about passage lessons at; brainly.com/question/25950911
Answer:
Hurricane.
Explanation:
Hurricanes get energy from the humid air at the ocean’s surface. The more humidity there is, the stronger the hurricane.
Answer:
Yes
Explanation:
deciding what to wear to a pre -wedding introduction rites took so much of my time