Purchase Solution

Confidence Intervals for the Variance and Standard Deviation

Not what you're looking for?

Ask Custom Question

The 2 problems attached are problems from the topic Confidence Intervals for the Variance and Standard Deviation of a Normal Proportion. Please provide a very detailed solution to the problems.

Purchase this Solution

Solution Summary

To find the confidence interval for variance using chi-square test statistic.

Solution Preview

Please see the attached file.

χˆ2 is chi -square variate

χˆ2 = (N-1)sˆ2 / σˆ2 folllows chi square distribution with (N-1) degrees of freedom where N is ...

Purchase this Solution


Free BrainMass Quizzes
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.

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.