A Researcher Believes That a Variable Is Poisson Distributed Across $\alpha$

Multiple Choice

A researcher believes that a variable is Poisson distributed across six categories.To test this,the following random sample of observations is collected:
Using $\alpha$ = 0.10,the critical chi-square value for this goodness-of-fit test is ___.

A) 1.064
B) 13.277
C) 9.236
D) 8.799
E) 7.779