Purchase Solution

# Confidence Interval for the Proportion

Not what you're looking for?

A new voice mail system is installed. After 2 hours of training, employees are expected to be able to compose and send a message to a distribution list. Three days later, 30 employeess are asked to demonstrate this procedure. Of the 30 sampled, 7 successfully composed and send a message. If these thirty represent a random sample of employees, what is the 99% interval estimation for the percent of employees who can successfully compose and send a message to a distribution list.

##### Solution Summary

The solution provides explanations how to find out the confidence interval for the proportions.

##### Solution Preview

Thanks for letting me work on your post. Here is my explanation:

The critical z value for 99% confidence interval ...

##### 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.

##### Measures of Central Tendency

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

##### 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.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.