A police commissioner is interested in the number of phone calls into the police dispatcher that result in criminal charges actually being filed. For a random sample of 190 nights (7pm-7am), the following information was obtained where x = number of calls resulting in criminal charges and f = frequency with which this many calls occurred (i.e., number of nights)
x 25 26 27 28 29 30 31 32 33 34
f 11 16 17 22 24 17 23 26 21 13
Assuming these 190 nights represent the population of all nights in this police precinct, what do you estimate the probability is that on a randomly selected night, there will be from 25 to 29 (including 25 and 29) calls to the dispatcher that result in criminal charges being filed?