Hospital records indicated that maternity patients stayed in the hospital for a number of days shown in the distribution

Days Stayed Frequency
1 34
2 23
3 17
4 11
5 8

If a patient's records are selected calculate the probability of each event.
A patient stay exactly 3 days.(Round to nearest thousandth)

1 answer

17 out of a total of 93 patients stayed for 3 days
21/93 = ?