Statistics - Confindence Interval
Not what you're looking for?
What percentage of times will the mean (population proportion) not be found within the confidence interval?
What is the most controllable method of increasing the precision (narrowing) of the confidence interval?
Purchase this Solution
Solution Summary
A neat and step-by-solution is provided to determine the percentage of population proportion within the confidence interval as well as the most controllable method of increasing the precision (narrowing) of the confidence interval.
Solution Preview
(a) Let the population mean = mu and the population standard deviation = sigma
Assume that the confidence interval extends to Z standard deviations on both sides of the mean. Then we ...
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
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
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.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.