Purchase Solution

Statistics - Normal Distribution: Word problem

Not what you're looking for?

Ask Custom Question

An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the scores on the test are normally distributed with a mean of 580 and a standard deviation of 120. The individuals who exceed 780 on this test are considered to be potential leaders. What proportion of the population are considered to be potential leaders? Round your answer to at least four decimal places.

Purchase this Solution
Solution Summary

This solution show how to determine the proportion of students who score over a given value on a test based on the mean and standard deviation.

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.

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.

View More Free Quizzes
Related BrainMass Solutions

  • Normal Distribution Curve/Chart Statistics

    The expert examines the normal distribution curve/chart for statistics.

  • Calculate the mean, median, and mode

    please check attachment: one word and one excel. The solution gives detailed steps on calculating some values on descriptive statistics: mean, median, mode, standard deviation and z value of normal distribution.

  • 7 Questions on Normal Distribution and Break Even Analysis

    258060 The Attached word document contains solutions to 7 problems on the Normal Distribution and Break-even analysis. QUESTIONS 1.

  • Distribution of Temperatures - Descriptive and General Statistics

    535052 Distribution of Temperatures - Descriptive and General Statistics Problem 1: Using Symbols Word-process the symbol for population standard deviation (sigma) in the space below: Using Subscripts Word-process the symbol for population standard

  • Normal curves and sampling distribution

    (Please do in word) ** Please see the attached file for the complete solution response ** This solution provides a detailed step by step explanation of the given statistics problem.

  • Statistics - Standard Normal Distribution

    237533 Statistics - Standard Normal Distribution Define a standard normal distribution. Why does a researcher want to go from a normal distribution to a standard normal distribution? Explain.

  • Descriptive Statistics : Normal

    The shape of the sampling distribution is normal. This solution provides a step-by-step method for computing descriptive statistics.

  • Normal approximation to a binomial distribution.

    Please see the attached Word Document. This soluton shows how to approximate a binomial distribution with a normal distribution, with and without the continuity correction.

  • Null Hypothesis Statistics

    State the null and alternative hypothesis in word form and express in symbols. This is my first statistics class. I have great difficulty setting up problems.

  • Distributions/Frequency

    This is a 284 word response that answers three questions concerning Distributions and Frequency. It covers purpose, properties of normal distribution, and central tendency.

View More Related Solutions