Suppose the Population of All Public Universities Shows the Annual

question 42

Multiple Choice

Suppose the population of all public Universities shows the annual parking fee per student is normally distributed with a mean of $110 with a standard deviation of $18.If a random sample of size 49 is drawn from the population, the probability of drawing a sample with a mean of more than $115 is closest to _______.

• A)0.9738
• B)0.4738
• C)0.0262
• D)0.6103
• E)0.1103

---

Definitions:

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution, affecting the shape of the distribution.

P-values

P-values provide the probability of obtaining an effect at least as extreme as the one in your sample data, assuming the truth of the null hypothesis.

Standard Error

A statistic that measures the average distance that a sample statistic, such as the mean, deviates from the actual population mean.

Alternative Hypothesis

A statement that contradicts the null hypothesis and is tested directly in a hypothesis testing framework, assuming the null hypothesis is false.