Purchase Solution

Minimum sample size BIG Corporation

Not what you're looking for?

Ask Custom Question

A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of eight ounces of coffee per cup. If it dispenses more that that on average, the corporation may lose money, and if it dispenses less, the customers may complain.

BIG Corporation would like to estimate the mean amount of coffee, M , dispensed per cup by this machine. BIG will choose a random sample of cup amounts dispensed by this machine and use this sample to estimate M . Assuming that the standard deviation of cup amounts dispensed by this machine is 0.35 ounces, what is the minimum sample size needed in order for BIG to be confident that its estimate is within 0.08 ounces of M ?

Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).

Please see the attached file for full problem description.

Purchase this Solution

Solution Summary

The solution calculates the sample size required for estimating the mean amount of coffee.

Solution Preview

Mean=M = 8 ounces
Standard deviation =s= 0.35 ounces
(sample mean-M )= 0.08 ounces (to ensure estimate is within 0.08 ounces of M )
sx=standard error of ...

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.

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.