Use the Following Information to Answer the Next Few Questions

question 71

Multiple Choice

Use the following information to answer the next few questions.
After a long week, you join a few friends at a local pub to enjoy a meal and have a few beers. After a few hours and several beers, you find yourself to be quite thirsty.
-You feel thirsty because

• A)you ate very salty pub food.
• B)you abstained from alcohol and drank water.
• C)you drank a few beers.
• D)you ate salty pub food and drank a few beers.
• E)you drank water and ate salty pub food.

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Definitions:

Student T Distribution

A probability distribution used in statistics for estimating population parameters when the sample size is small and the population variance is unknown.

Normal Distribution

Exhibiting symmetry around the mean, this probability distribution reveals that there are more occurrences close to the mean than far away from it.

Chi-squared Distribution

A statistical distribution that is used to describe the distribution of a sum of squared random variables, often used in hypothesis testing.

Degrees of Freedom

The number of independent pieces of information used in the calculation of a statistic, typically the size of the data set minus the number of parameters estimated.