Purchase Solution

Confidence interval for population proportion.

Not what you're looking for?

Ask Custom Question

A large supermarket conducted a consumer preference study by recording the brand of wheat bread pruchased by customers in its stores. The supermarket carries four brands of wheat bread and the brand preferences of a random sample of 200 purchasers are given in the following table:
BRAND
A=51
B=82
C=27
D=40
Test the null hypothesis that the four brands are equally preferred by setting x equal to .05. Find a 95% confidence interval for the proportion of all purchasers who prefer brand B

Attachments
Purchase this Solution

Solution Summary

The solution provides step by step method for the calculation of confidence interval for proportion . Formula for the calculation and Interpretations of the results are also included.

Solution Preview

A large supermarket conducted a consumer preference study by recording the brand of wheat bread purchased by customers in its stores. The supermarket carries four brands of wheat bread and the brand preferences of a random sample of 200 purchasers are given in the following table:
BRAND
A=51
B=82
C=27
D=40
Test the null ...

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.

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.