Explore BrainMass

Explore BrainMass

    Minimum sample size BIG Corporation

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    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.

    © BrainMass Inc. brainmass.com March 6, 2023, 1:19 pm ad1c9bdddf


    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 ...

    Solution Summary

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