Skillbuilder Applet Exercise simulates taking samples of size 4 from an approximately normal population, where 65.15 and
Question:
Skillbuilder Applet Exercise simulates taking samples of size 4 from an approximately normal population, where
65.15 and 2.754.
a. Click “1” for “# Samples.” Note the four data values and their mean. Change “slow” to “batch” and take at least 1000 samples using the “500” for “# Samples.”
b. What is the mean for the 1001 sample means?
How close is it to the population mean, ?
c. Compare the sample standard deviation to the population standard deviation, . What is happening to the sample standard deviation?
Compare it with , which is 2.754/4.
d. Does the histogram of sample means have an approximately normal shape?
e. Relate your findings to the SDSM.
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Related Book For 
Just The Essentials Of Elementary Statistics
ISBN: 9780495314875
10th Edition
Authors: Robert Johnson, Patricia Kuby
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