At a local supermarket receiving dock the number of truck ar

At a local supermarket receiving dock, the number of truck arrivals per day is recorded for 100 days. Carry out the chi-square test, combining end categories as needed to ensure that all expected frequencies are at least five (Perform a Poisson Goodness of Fit test for alpha = .01, combining the last three categories into a single category for 5 or more. Do not round your intermediate calculations. Round your answers to 4 decimal places.)

Solution

Chi-square = 4.5682

d.f = 5

p-value = 0.4708

refer the following:

Poisson fit:

Chi-square test :

x	F	XF		probability	Expected frequency
0	3	0	0.07353	0.07353	7.353
1	22	22	0.191913	0.191913	19.19133
2	26	52	0.500894	0.250447	25.04468565
3	26	78	1.307333	0.217889	21.78887652
4	11	44	3.412138	0.142172	14.21724193
5	8	40	8.90568	0.074214	7.421400286
6	3	18	23.24383	0.032283	3.228309124
7	1	7	60.66639	0.012037	1.203698116
		261
	mean	2.61