Use Goodness-of-Fit Test for Poisson to test the hypotheses:
H0: Data follow a Poisson distribution
H1: Data do not follow a Poisson distribution
We used here MINITAB
first enter the data in MINITAB cells, in first cell enter number and second cell enter frequency.
now follow the following instructions:
Choose Stat > Basic Statistics > Goodness-of-Fit Test for Poisson.
In Variable, enter Number.
In Frequency, enter Frequency
Click OK.
Session window output
Goodness-of-Fit Test for Poisson Distribution
Data column: Number
Frequency column: frequency
Poisson mean for Number = 0.311944
Number Observed Probability
Expected Contribution to
Chi-Sq
0 1924
0.732022 1893.74
0.48347
1
541 0.228350
590.74
4.18840
2
103 0.035616
92.14 1.28018
>=3
19 0.004011
10.38 7.16525
N DF Chi-Sq
P-Value
2587 2 13.1173 0.001
Here we reject null hypothesis, Since p-value is less than 0.05
that is conclusion is Data does not follow the Poisson distribution. or does not come from Poisson distribution.
Please show all steps! I am not supposed to use excel or a calculator and cant...
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