You take a certain rock and drop it in a 9 foot deep pool and measure how many
seconds it takes to reach the bottom. You do this 500 times. The average
time is 3.2 seconds and the SD is .2 seconds. In one drop how much is the
time likely to be off?
Carlos Rodriguez <email@example.com>
This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998