Transport engineers are interested to study the pattern and the risk of accidents at a junction. Suppose we observe the following frequency distribution of the number of accidents in 150 weeks. Number...

Extracted text: Transport engineers are interested to study the pattern and the risk of accidents at a junction. Suppose we observe the following frequency distribution of the number of accidents in 150 weeks. Number of Accidents 0 Observed frequency 50 30 24 30 1 2 3 4 5 6 7+ 10 5 1 0 Find an estimate (to four decimal places) of the average number of accidents in a week. Perform a goodness of fit test at the 5% significance level of the null hypothesis that the observed number of accidents follow a Poisson distribution.