Purchase Solution

Chebyshev Theorem and Confidence Interval

Not what you're looking for?

Ask Custom Question

a) Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5

b) Use the Empirical Rule to find what two values 95% of the data will fall between for a data set with mean 234 and standard deviation of 12

An aptitude test has a mean of 220 and standard deviation of 10. find the corresponding z score for: a) a test score of 232 b) a test score of 212

Purchase this Solution

Solution Summary

The solution shows how the Chebyshev Theorem can be used to compute the percentage values that fall in a given interval.

Solution Preview

(1) (a) z1 = (Mean - x1)/SD = (135 - 120)/7.5 = 2 and z2 = (Mean - x2)/SD = (135 - 150)/7.5 = -2

According to Chebyshev's ...

Purchase this Solution

Free BrainMass Quizzes
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.

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.