Explore BrainMass

Explore BrainMass

    Coin Operated Drink Machine Hypothesis Testing

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

    Problem

    A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup. In a test of the machine, the discharge amounts in 12 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 6.85 ounces and 0.23 ounces, respectively. If we assume that the discharge amounts are normally distributed, is there enough evidence, at the 0.1 level of significance, to conclude that the true mean discharge, mu, differs from 7 ounces?
    Perform a two-tailed test. Then fill in the table below.

    Problem:

    Null hypothesis: H0:______

    Alternative hypothesis: H1:______

    Type of test statistic: (Z, t, Chi squared, F)

    Value of test statistic:______

    The two critical values at the 0.1 level of significance:____, ____

    At the 0.1 level of significance, can we conclude that the true mean discharge differs from 7 ounces?: (Yes/No)

    © BrainMass Inc. brainmass.com June 3, 2020, 8:31 pm ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/coin-operated-drink-machine-hypothesis-testing-141458

    Solution Preview

    A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup. In a test of the machine, the discharge amounts in 12 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 6.85 ounces and 0.23 ...

    Solution Summary

    The solution tests hypotheses for a coin operated drink machine and its discharge.

    $2.19

    ADVERTISEMENT