Explore BrainMass

Explore BrainMass

    Sample Size for 95% Confidence

    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!

    Problem (see attached):

    1) An Entomologist wishes to estimate the average development time of the citrus red mite correct to within .5 day. From previous experiments it is known that standard deviation is in the neighborhood of 4 days. How large a sample should the entomologist take to be 95% confident of her estimate.

    © BrainMass Inc. brainmass.com March 4, 2021, 6:21 pm ad1c9bdddf
    https://brainmass.com/statistics/sample-size-determination/sample-size-confidence-41492

    Attachments

    Solution Preview

    See the attachment for the full solution.

    1) An Entomologist wishes to estimate the average development time of the citrus red mite correct to within .5 day. From previous experiments it is known that σ is in the ...

    Solution Summary

    This solution is provided in approximately 84 words in an attached .doc file. It uses an equation for margin of error to calculate sample size and provides a website to show how to calculate z-value.

    $2.49

    ADVERTISEMENT