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Question

A researcher believes that a variable is Poisson distributed across six categories. To test this, the following random sample of observations is collected:
Category 0 1 2 3 4 >5
Observed 7 18 25 17 12 5

Using a= 0.10, the critical value of chi-square for the data is _______.
a) 9.236
b) 7.779
b) 1.064
c) 13.277
d) 12.89

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