Question
A sample of nine fastballs thrown by a certain pitcher were measured at speeds of 94, 87, 80, 91, 85, 102, 85, 80, 93 miles
A sample of nine fastballs thrown by a certain pitcher were measured at speeds of
94, 87, 80, 91, 85, 102, 85, 80, 93 miles per hour.
(a) What is the point estimate of the mean speed of this pitcher's fastball?
(b) Construct a 95 percent confidence interval estimate of the mean speed.
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Statistics For Business And Economics
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
11th Edition
978-0324783254, 324783256, 978-0324783247, 324783248, 978-0538481649
