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Determine​ (a) the chi squared χ2 test​ statistic, (b) the degrees of​ freedom, (c) the critical...

Determine​ (a) the chi squared χ2 test​ statistic, (b) the degrees of​ freedom, (c) the critical value using α=0.05​, and​ (d) test the hypothesis at the α=0.05 level of significance.

H0​: pA = pB = pC = pD = 1/4th

H1​: At least one of the proportions is different from the others.

​(a) The test statistic is __?__ . ​(Type an exact​ answer.)

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