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

Which of the following should not be part of the informed consent form.

saw5 [17]

The option among the given ones that should not be part of the informed consent form is;

A. Name of the researchers and the institution affiliated with.

<h3>Informed Consent</h3>

To answer this we need to understand informed consent which is a process of getting someone's permission before conducting a certain activity with respect to such a person.

Now, in this informed consent, there is usually a form that is filled by the participant(s) to make sure they consent to the activity to be carried out. The details will include the name of the participant, the title of the study and purpose of the study.

It is pertinent to also note that there will have to be anonymity of the participants.

In conclusion, the correct option is A.

The missing options are;

A. Name of the researchers and the institution affiliated with.

B. Name of the participants and the institution affiliated with.

C. Anonymity of the participants and their responses.

D. Title of the study and purpose of the study.

Read more about informed consent at: brainly.com/question/14600637

4 0

3 years ago