The diameters (in inches) of 18 randomly selected bolts produced by a machine are listed. Use a
Question:
The diameters (in inches) of 18 randomly selected bolts produced by a machine are listed. Use a 95% level of confidence.
Assume the sample is from a normally distributed population and construct the indicated confidence intervals for
(a) The population variance σ2 and
(b) the population standard deviation σ. Interpret the results.
Transcribed Image Text:
4.477 4.425 4.034 4.317 4.003 3.760 3.818 3.749 4.240 3.941 4.131 4.545 3.958 3.741 3.859 3.816 4.448 4.206
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Related Book For
Elementary Statistics Picturing The World
ISBN: 9780134683416
7th Edition
Authors: Ron Larson, Betsy Farber
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