# Chi-square Test

The Springfield Emergency Medical Service keeps records of its calls. A study of 150 five-minute time intervals resulted in the distribution of number of calls. Use a .01 level of significance and do a chi-square goodness of fit analysis for the data. Analyze the results and interpret what they mean. Use the 5-step hypothesis testing procedure and determine whether this distribution is Poisson

Number of Calls

(per 5-minute interval) Frequency

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0 18

1 28

2 47

3 21

4 16

5 11

6 or more 9

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https://brainmass.com/statistics/chi-squared-test/chi-square-test-goodness-fit-poisson-distribution-84844

#### Solution Summary

The solution tests the goodness of fit of a Poisson Distribution.

$2.19