You are analyzing the sample of bolts in Exercise 13. The population standard deviation of the bolts
Question:
You are analyzing the sample of bolts in Exercise 13. The population standard deviation of the bolts’ diameters should be less than 0.5 inch. Does the confidence interval you constructed for σ suggest that the variation in the bolts’ diameters is at an acceptable level? Explain your reasoning.
Data from Exercise 13:
The diameters (in inches) of 18 randomly selected bolts produced by a machine are listed. Use a 95% level of confidence.
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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