Consider the following competing hypotheses and relevant summary statistics: (You may find it useful to reference the appropriate table: chi-square table or F table) H0: σ21/σ22�12/�22 ≤ 1 HA: σ21/σ22�12/�22 > 1   Sample 1: s21�12 = 857, and n1 = 20 Sample 2: s22�22 = 832, and n2 = 7   a. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.)

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