Question: Each February in Indianapolis, prospective National Football League players meet to try out for the NFL draft. A determining factor is a players’ time to run the 40-yard dash. In 1996, the fastest time recorded was 4.36 seconds, by Leeland McElroy of Texas A&M. The slowest time was 5.6 seconds by Elmer Fud from Backwater Arkansas.

As a scout for an NFL team you would like to know how many measurements for a particular player should be used to estimate the players’ mean time in the dash to within 0.15 seconds with a 90% confidence interval. (Also, now you wished you had paid attention when you took that course in college, even though you couldn’t image how you would ever apply it to your career plans of being a NFL scout. You also realize that if you screw up here, your first major assignment, you will go back to selling hot dogs at the games.)

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Deliverable: Word Document