The Customer Service Department of H&R Block Received a Total

question 106

Multiple Choice

The customer service department of H&R Block received a total of 235 telephone requests for a tip-
Sheet on personal tax or corporate tax. The following table summarizes callers' primary area of
Interest, and how they first heard about the tip-sheet.
Suppose that a caller is selected at random. Find the probability that the caller selected heard about
The report from the radio, assuming they are interested in personal tax.

• A) 34/100
• B) 34/235
• C) 34/135
• D) 34/70A

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Definitions:

Operational Definition

A clear, detailed description of how variables in a study are measured or categorized.

Independent Variable

The factor in a study that the investigator alters to examine its impact on the dependent variable.

Inferential Statistics

A branch of statistics that deals with drawing conclusions about a population based on a sample.

Hypothesis

A proposed explanation for a phenomenon, which can be tested through experimentation or observation.