NEED RIGHT NOW!!! Using the Empirical Rule
Quick
Check
The numbers of minutes a group of people spend waiting What percent of oil changes take less than 60
for an oil change are Normally distributed with a mean of minutes?
40 minutes and a standard deviation of 10 minutes.
2.5%
Minutes Waiting for an Oil Change
47.5%
O 97.5%
99.7%
1
1
1
1
10
60
70
20 30 40 50
Minutes
Intro