Catherine Chao, Director of Marketing Research, Is Evaluating Consumer Acceptance

question 93

Multiple Choice

Catherine Chao, Director of Marketing Research, is evaluating consumer acceptance of a new toothpaste package.She plans to use a 95% confidence interval estimate of the proportion of households which prefer the new packages; she will accept a 0.05 error.Previous studies indicate that new packaging has an approximately 70% acceptance rate.The sample size should be at least _______.

• A)27
• B)59
• C)323
• D)427
• E)500

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Definitions:

Pi Value

The mathematical constant π, representing the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.

Java Method

A block of code within a class that contains a group of statements and can be executed when it is called or invoked.

Boolean Expressions

Logical statements that return either true or false based on given conditions.

If-Else Statements

If-Else statements in programming are conditional statements that execute different blocks of code based on whether a given condition is true or false.