SCENARIO 8-13 The President of a University Is Concerned That Illicit Drug

question 113

True/False

SCENARIO 8-13
The president of a university is concerned that illicit drug use on campus is higher than the 5% targeted level.A random sample of 250 students from a population of 2,000 revealed that 7 of them had used illicit drugs during the last 12 months.
-Referring to Scenario 8-13,using the 90% one-sided confidence interval,the president can be 85% confident that no more than 5% of the students at the university had used illicit drugs during the last 12 months.

---

Definitions:

P-value

The probability of getting results from tests that are at least as exceptional as the outcomes truly noted, assuming the null hypothesis is factual.

Z Statistic

A type of standard score that represents the number of standard deviations a data point is from the mean of a distribution.

Normal Distribution

A bell-shaped frequency distribution curve that is symmetric about the mean and described by its mean and standard deviation.

One-tailed Test

A hypothesis test where the area of rejection is on only one side of the sampling distribution, used to determine if a parameter is greater than or less than a certain value.