Statistics - Probability
Not what you're looking for?
Although most people believe breakfast is the most important meal of the day, 25% of adults skip breakfast (U.S. News & World Report, November 10, 1997). Assume the population proportion is p = .25, and pbar is the sample proportion of adults who skip breakfast based on a sample of 200 adults.
a) Show the sampling distribution of pbar.
b) What is the probability that the sample proportion will be within plus or minur .03 of the population proportion?
c) What is the probability that the sample proportion will be within plus or minus .05 of the population proportion?
Purchase this Solution
Solution Summary
This solution shows all of the steps for calculating the sampling distribution and the probabilities in the given questions.
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.
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.