Explore BrainMass

Explore BrainMass

    One Tailed t Test for Hypothesis Test.

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

    I need help with the following:

    A small shirt producer, is concerned that the mean weight of their classic shirt is not greater than 3.0 pounds. It can be assumed that the population standard deviation is .9 pounds based on past experience. A sample of 310 hats is selected and the sample mean is 3.15 pounds. Using a level of significance of .05, is there evidence that the population mean weight of the shirts is greater than 3.0 pounds? Fully explain your answer.

    © BrainMass Inc. brainmass.com June 4, 2020, 2:49 am ad1c9bdddf
    https://brainmass.com/statistics/students-t-test/one-tailed-t-test-hypothesis-test-482030

    Solution Preview

    Null hypothesis: the mean weight of their classic shirt is not greater than 3.0 pounds. mu<=3.0
    The alternative hypothesis: mu>3.0.
    At 0.05 ...

    Solution Summary

    The solution provides detailed explanation how to perform one tailed t test for hypothesis test.

    $2.19

    ADVERTISEMENT