Question

The following data gives the number of cars

observed waiting in line at the beginning of
2-minute intervals between 3 and 5 p.m. on a
certain Friday at the drive-in teller of a bank.
Help
0
1
2
3
4
Number
of Cars
5
6
7
8
Frequency 2
9
16
12
8
6
4
2
1
To the nearest percent, the probability that there is
no one in line is [? ]%.

Answer 1

3%

Explanation:

2 : (2 + 9 + 16 + 12 + 8 + 6 + 4 + 2 + 1) = 1/30 ≈ 3.33% ≈ 3%