6. A researcher obtains a sample from an unknown population and computes a sample mean of M...

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6. A researcher obtains a sample from an unknown population and computes a sample mean of M = 43 with a standard deviation of s = 6.

a. If the sample has n = 16 scores, compute an 80%

confidence interval to estimate the unknown population mean.

b. If the sample has n = 36 scores, compute an 80%

confidence interval to estimate the unknown population mean.

c. Comparing your answers for a and

b, describe how sample size influences the width of a confidence interval.

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Essentials Of Statistics For The Behavioral Sciences

ISBN: 9780495812203

7th Edition

Authors: Frederick J. Gravetter, Larry B. Wallnau

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Question Posted: Nov 15, 2024 07:00 AM

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6. A researcher obtains a sample from an unknown population and computes a sample mean of M...

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Essentials Of Statistics For The Behavioral Sciences

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