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Consider the following competing hypotheses and accompanying sample data. (You may find it useful to reference the appropriate table: z table or t table )

Consider the following competing hypotheses and accompanying sample data. (You may find it useful to reference the appropriate table: z table or t table) H0: p1 p2 = 0.20 HA: p1 p2 0.20

x1 = 167

x2 = 127

n1 = 243

n2 = 422

a. Calculate the value of the test statistic. (Round final answer to 2 decimal places.)

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