Which animal is native to the tundra?

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:

$\overline{x} \pm t\frac{s}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

t is the critical value.

n is the sample size.

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:

$\overline{x} - t\frac{s}{\sqrt{n}} = 12.2 - 2.0106\frac{1.6}{\sqrt{49}} = 11.7$

$\overline{x} + t\frac{s}{\sqrt{n}} = 12.2 + 2.0106\frac{1.6}{\sqrt{49}} = 12.7$

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

4 0

2 years ago

John F. Kennedy had a combination of ideal types of leadership. Although he was the president of the United States, he also insp

Bogdan [553]

Legal (rational) authority and charismatic (personal) authority.
Holding the office of President of the United States gives the office-holder specific legal authority as leader of the country, established by laws that have been put in place through rational processes of government. This is what sociologist Max Weber termed "rational-legal authority."
Charismatic authority (also described by Weber) points to the personal power of an individual to gain the support and cooperation of others, to get people to follow his leadership.
Weber also described a third type of authority, "traditional authority," where a person's style and personality aligns with traditions in society and thus is seen as someone who will maintain traditional values or policies.

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3 years ago