Question: data are drawn from a bellshaped distribution with a mean...
Question details
Data are drawn from a bellshaped distribution with a mean of 100
and a standard deviation of 4.
a) Approximately why percentage of the observations fall
between 92 and 108?

b) Approximately what percentage of the observations fall
between 88 and 112?

c) Approximately what percentage of the observations are less
than 96?

I’m having a lot of trouble with these, please explain each
problem and show work.