[Objective: Interpret the Parts of the Hypothesis Test] a Researcher

question 23

Multiple Choice

[Objective: Interpret the parts of the hypothesis test] A researcher conducts a hypothesis test on a population proportion. Her null and alternative hypothesis are . The test statistic and p-value for the test are z=-3.01 and p-value =0.0013. For a significance level of , choose the correct conclusion regarding the null hypothesis.

• A) There is not sufficient evidence to reject the null hypothesis that the population proportion is equal to 0.4.
• B) There is sufficient evidence to accept the null hypothesis that the population proportion is equal to 0.4.
• C) There is sufficient evidence to conclude that the population proportion is significantly different from 0.4.
• D) There is not sufficient evidence to conclude that the population proportion is significantly different from 0.4.

---

Definitions:

Hours

Units of time equal to 60 minutes, commonly used to measure the duration of activities or to record time.

Retirement Ages

The ages at which individuals are typically expected or allowed to cease full-time employment and receive pension benefits.

GPA

An acronym for Grade Point Average, which is a numerical representation of a student's academic performance, averaged over a certain period.

Mean Speed

The average velocity of an object, calculated as the total distance traveled divided by the total time taken.