The Manager of a Toy Store Wants to Estimate the Population

question 117

Multiple Choice

The manager of a toy store wants to estimate the population mean of daily online customers by using a 90% confidence interval estimate that has a margin of error of ±50.0. If the population standard deviation is thought to be 300, what is the required sample size?

• A) 139
• B) 100
• C) 10
• D) 98

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Definitions:

Standard Deduction

A fixed dollar amount that reduces the income on which you are taxed, varying by filing status and adjusted annually for inflation.

Dependent

A person who relies on another, especially a family member, for financial support and qualifies for potential tax benefits.

Part-Time Job

Employment with fewer hours per week than a full-time job, often offering limited benefits and lower wages.

Interest Income

Income earned from deposit accounts, investments, or loans, often subject to taxation at ordinary income tax rates.