In aχ2 goodness-of-fit test,\(\style{font-family:Times New Roman;}{e_i=np_i}\)is:
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the exponentially distributed random variable.
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the expected value for theith cell assumingH0is false.
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the expected value for theith cell assumingH0is true.
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the expectation for the average value function expressed as a product of sample size and proportion.