what percentage of observation fall between 1300 and 1700 if the mean 1500 and the standard deviation is 100
2
what percentage of observation fall between 1100 and 1900
3
Using Chebyshev’s theorem, what percentage of the observations fall between 1100 and 1900
4
Data with 250 observations are drawn from a bell-shaped distribution with a mean of 50 and a standard deviation of 12. Approximately how many observations are more than 74?
