Give a null hypothesis for a goodness-of-fit test and a frequency table from a sample. For each table, find:
(a) The expected count for the category labeled B
(b) The contribution to the sum of the chi-square statistic for the category labeled B
(c) The degrees of freedom for the chi-square distribution for that table.

H₀: p_a = 0.1, p_b = 0.35, p_c = 0.2, p_d = 0.05, p_e = 0.1, p_f = 0.2
H_a: Some pi is wrong

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C D E F A B 210 732 396 125 213 324