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You are conducting a multinomial hypothesis test for the claim that the 4 categories occur with the following frequencies:
Ho : pA=0.25; pB=0.1; pC=0.4; pD=0.25

Complete the table. Round to 3 decimal places.
Category Observed
Frequency Expected
Frequency (O−E)^2/E
A 30
B 12
C 48
D 26

What is the chi-square test-statistic for this data?
χ2=