If the Sale of Ice Cream and Pizza Are Independent

question 24

Multiple Choice

If the sale of ice cream and pizza are independent, then as ice cream sales decrease by 60 percent during the winter months, pizza sales will

• A)increase by 60 percent.
• B)increase by 40 percent.
• C)decrease by 40 percent.
• D)be unrelated.

---

Definitions:

Population Mean

The average value of all the members of a population.

Random Sample

A subset of individuals chosen from a statistical population in such a way that each individual has an equal chance of being selected.

Conversation Length

The duration of an exchange of thoughts or information between two or more individuals, often measured in units of time.

Margin of Error

An expression of the amount of random sampling error in a survey's results, often used to create confidence intervals around a sample statistic.