II$-$A: On a selected road section, the following accident data has been reported:

$\backslash$table$[[$Year$,$Number of Accidents,Year,Number of Accidents$],[\frac{?}{\text{b}\text{a}\text{r}}(1989),3,1994,4],[1990,4,1995,$I$],[1991,3,1996,2],[1992,3,1997,$I$],[1993,5,1998,1]]$

a$)$ How many averagesinoms can be reported for the above given data? Calculate and mention them?

b$)$ Decide having I $($one$)$ accident at the seventh yeir is because of random fluctuation of accidents or due to the change in road traffic conditions by using the first six years data and the "Poisson Test". $($Table on the back side of the question sheet$)$

c$)$ Evaluate the same situation $($similar to the one mentioned in part b$)$ for having I$($one$)$ aceident at the last year by using the last four years' data.