Question: A data sample is sorted into five categories with an assumed probability distribution.
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a. Find the size n of the sample.
b. Find the expected number E of observations for each level, if the sampled population has a probability distribution as assumed (that is, just use the formula Ei = n × pi).
c. Find the chi-square test statistic χ2.
d. Find the number of degrees of freedom of the chi-square test statistic.