Explore BrainMass

Explore BrainMass

    Sample Size for the Estimation of Mean for Elephants

    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!

    In a study of elephants a researcher wishes to determine the average weight of a certain subspecies of elephants. From previous studies, the standard deviation of the weights of elephants in this subspecies is known to be 1500 pounds. How many elephants does the researcher need to weigh so that he can be 80% confident that the average weight of elephants in his sample is within 350 pounds of the true average weight for this subspecies?

    A. 31
    B. 39
    C. 50
    D. 166

    © BrainMass Inc. brainmass.com October 7, 2022, 7:06 pm ad1c9bdddf

    Solution Summary

    The solution provides step by step method for the calculation of sample size for the estimation of mean. Formula for the calculation and Interpretations of the results are also included.