Confidence Interval for Population Proportion
Not what you're looking for?
See attached data file.
A market research consultant hired by the Pepsi-Cola Co. is interested in determining the proportion of consumers who favor Pepsi-Cola over Coke Classic in a particular urban location. A random sample of 250 consumers from the market under investigation is provided in P09_17.xlsx.
Construct a 90% confidence interval for the proportion of all consumers in this market who prefer Pepsi. Interpret this confidence
interval for Pepsi-Cola's market researchers.
Purchase this Solution
Solution Summary
The solution provides step by step method for the calculation of confidence interval for population proportion. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.
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.
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.