Purchase Solution

Standard Normal Distribution

Not what you're looking for?

Ask Custom Question

Suppose the average age of a passenger train car is 19.8 years. If the distribution of ages is normal and 18% of the cars are older than 21.6 years, find the standard deviation. Round the answer to two decimal place.

Purchase this Solution

Solution Summary

Calculates the value of standard deviation using normal distribution.

Solution Preview

Please see attached file.

Suppose the average age of a passenger train car is 19.8 years. If the distribution of ages is normal and 18% ...

Purchase this Solution


Free BrainMass Quizzes
Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.