Math Problem Statement

Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 100 minutes and a standard deviation of 15 minutes. What proportion of 1040R tax forms will be completed in less than 119 minutes? Round your answer to at least four decimal places.

Solution

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Statistics
Normal Distribution
Z-Score

Formulas

Z = (X - μ) / σ

Theorems

Standard Normal Distribution

Suitable Grade Level

Grades 10-12