Author Question: The mean of fifty sales receipts is 58.35 and the standard deviation is 10.38 . Using Chebyshev's ... (Read 78 times)

lbcchick · **on:** Aug 1, 2018

The mean of fifty sales receipts is 58.35 and the standard deviation is 10.38 . Using Chebyshev's theorem, determine how many sales receipts were between 37.59 and 79.11.

Question 2

In a test of a lifelong brand of tires, a survey revealed that the mean life was 35,000 miles and the standard deviation was 7,083 miles. If the shape of the population distribution is not known, approximately what percentage of the tires last less than 20,834 miles?