Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 6 - Normal Probability Distributions - 6-4 Sampling Distributions and Estimators - Basic Skills and Concepts - Page 282: 9

Answer

a) $5$ b) Sample Mean | Probability 4.0 | 1/9 4.5 | 2/9 5.0 | 1/9 6.5 | 2/9 7.0 | 2/9 9.0 | 1/9 c) $6.0$ d) No.

Work Step by Step

a) $5$ is the sample mean that will be the midpoint for your population table $/{4.0, 4.5, 6.5, 4.5, 5.0, 7.0, 6.5, 7.0, 9.0/}$ b) You take all possible combinations of sample, sample mean, and probability from population and put it into a sample mean/probability table. c) $4.0(1/9) + 4.5(2/9) + 5.0(1/9) + 6.5(2/9) + 7.0(2/9) + 9.0(1/9) = 6.0$ d) No. The mean of the sampling distribution of the sample medians is $6.0$, and it is not equal to the value of the popula- tion median ($5$), hence sample medians do not target the value of the population median.
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