In a three-digit lottery, each of the three digits is
supposed to have the same probability of occurrence (counting initial blanks as
zeros, e.g., 32 is treated as 032). The table shows the frequency of occurrence
of each digit for 90 consecutive daily three-digit drawings. (a) Make a bar
chart and describe it. (b) Calculate expected frequencies for each class. (c)
Perform the chi-square test for a uniform distribution. At _ = .05, can
you reject the hypothesis that the digits are from a uniform population?
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