The Springfield Emergency Medical Service keeps records of emergency telephone calls. A study of 150 five-minute time intervals resulted in the distribution of number of calls as follows. For example, during 18 of the five-minute intervals, no calls occurred. Use the chi-square goodness-of-fit test and ?=.01 to determine whether this distribution is Poisson.Find the observed value of chi-square. Round the answer to 2 decimal places.Number of Calls (per 5-minute interval) Frequency0 181 282 473 214 165 116 or more 9The observed = ?

The Springfield Emergency Medical Service keeps records of emergency telephone calls. A study of 150 fiveminute time intervals resulted in the distribution of number of calls as follows. For example, during 18 of the fiveminute intervals, no calls occurred. Use the chisquare goodnessoffit test and ? = .01 to determine whether this distribution is Poisson. Find the observed value of chisquare. Round the answer to 2 decimal places. Number of Calls (per 5minute interval) Frequency 0 18 1 28 2 47 3 21 4 16