Practice final exam 1  (Page 2/3)

If you were to conduct an appropriate hypothesis test, the alternate hypothesis would be:

• A $H_{\mathrm{a}}$ : $p_{\mathrm{A}}$ = $p_{\mathrm{B}}$
• B $H_{\mathrm{a}}$ : $p_{\mathrm{A}}$ > $p_{\mathrm{B}}$
• C $H_{\mathrm{o}}$ : $p_{\mathrm{A}}$ = $p_{\mathrm{B}}$
• D $H_{\mathrm{a}}$ : $p_{\mathrm{A}}$ ≠ $p_{\mathrm{B}}$

The Type I error is to:

• A conclude that the pass rate for Math 1A is the same as the pass rate for Math 1B when, in fact, the pass rates are different.
• B conclude that the pass rate for Math 1A is different than the pass rate for Math 1B when, in fact, the pass rates are the same.
• C conclude that the pass rate for Math 1A is greater than the pass rate for Math 1B when, in fact, the pass rate for Math 1A is less than the pass rate for Math 1B.
• D conclude that the pass rate for Math 1A is the same as the pass rate for Math 1B when, in fact, they are the same.

The correct decision is to:

• A reject $H_{\mathrm{o}}$
• B not reject $H_{\mathrm{o}}$
• C There is not enough information given to conduct the hypothesis test

Which student is the BEST when compared to the other runners at her school?

• A Kia
• B Alejandra
• C Iris
• D Impossible to determine

The correct distribution to use for the hypothesis test is:

• A Normal
• B Binomial
• C Student's-t
• D Exponential

The hypothesis test:

• A is two-tailed
• B is left-tailed
• C is right-tailed
• D has no tails

Sara, a statistics student, wanted to determine the mean number of books that college professors have in their office. She randomly selected 2 buildings on campus and asked each professor in the selected buildings how many books are in his/her office. Sara surveyed 25 professors. The type of sampling selected is a:

• A simple random sampling
• B systematic sampling
• C cluster sampling
• D stratified sampling

A clothing store would use which measure of the center of data when placing orders for the typical "middle" customer?

• A Mean
• B Median
• C Mode
• D IQR

In a hypothesis test, the p-value is

• A the probability that an outcome of the data will happen purely by chance when the null hypothesis is true.
• B called the preconceived alpha.
• C compared to beta to decide whether to reject or not reject the null hypothesis.
• D Answer choices A and B are both true.