Homework Help: Statistics/Math

Posted by Jane on Wednesday, July 4, 2012 at 7:09pm.

U.S. Interstate 64 runs between Portsmouth, VA, at I-264 on the eastern end to St. Louis, MO, at I-270 on the western end. While passing through six states and five more major cities, I-64 intersects nine more interstate highways. The number of miles in each state is as follows.

Missouri--14 miles, Illinois--132 miles, Indiana--124 miles, Kentucky--196 miles, West Virginia--187 miles, Virginia--298 miles.

(a) Find the mean distance between major cities along I-64. (Give your answer correct to the nearest mile.)
. miles

(b) Find the mean distance between interchanges with interstate highways along I-64. (Give your answer correct to the nearest mile.)

Statistics/Math - Manny, Thursday, February 14, 2013 at 1:39am
the height of American women are normally distributed with a mean of 65.5 and a standard deviation of 2.5 inches. find the Z- scores of the height of 63 and 68 inches

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