A die was cast n=120 independent times and the following data resulted:
Spots up 1 2 3 4 5 6
Freq b 20 20 20 20 40-b
If we use a Chi-square test, for what values of b would the hypothesis that the die is unbiased by rejected at the 0.025 significance level?
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The solution determines the values of the dice that is unbiased and rejected at the significance level.