Question

Twelve different video games showing violence were observed. The duration times of violence were​ recorded, with the times​ (seconds) listed below. Assume that these sample data are used with a 0.05 significance level in a test of the claim that the population mean is greater than 75 sec. If we want to construct a confidence interval to be used for testing that​ claim, what confidence level should be used for a confidence​ interval? If the confidence interval is found to be 5.2 sec less than

9191

1414

547547

4747

00

5858

218218

4545

167167

00

22

5656

The confidence level should be. ​%.

​(Type an integer or a decimal. Do not​ round.)

Use technology to find the​ P-value for the hypothesis test described below.

The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is muμequals=16.00 Mbps. The sample size is n equals=19 and the test statistic is t equals= 2.539

P value =

​(Round to three decimal places as​ needed.)

Use technology to find the​ P-value for the hypothesis test described below.

The claim is that for 12 AM body​ temperatures, the mean is muμless than<98.6degrees°F.

The sample size is n equals=5 and the test statistic is t equals= -2.39

​P-value equals=

​(Round to three decimal places as​ needed.)

A data set includes data from student evaluations of courses. The summary statistics are n=96 x overbarx=3.67 s=0.64

Use a 0.05 significance level to test the claim that the population of student course evaluations has a mean equal to 3.75

Assume that a simple random sample has been selected. Identify the null and alternative​ hypotheses, test​ statistic, P-value, and state the final conclusion that addresses the original claim.

What are the null and alternative​ hypotheses?

A.

Upper H 0H:

muμnot ≠3.75

Upper H 1​:

muμ=3.75

B.

Upper H 0:

muμ=3.75

Upper H 1​:

muμ>3.75

C.

Upper H 0​:

muμ=3.75

Upper H 1​:

muμ ≠3.75

D.

Upper H 0​:

muμ=3.75

Upper H 1:

muμ<3.75

Answer 1

the answer is = 0.02056

from the given information,