Question

Help me please!!
3. A line up for tickets to a local concert had an average (mean) waiting time of 20 minutes with a standard deviation of 4 minutes.

a) What percentage of the people in line waited for more than 28 minutes?
%

b) If 2,000 ticket buyers were in line, how many of them would your expect to wait for less than 16 minutes?
people

Answer 1

Answer:

3.A

2.59 %

3.B

.16 x 2,000 = 320