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Suppose that the following is to be tested. H0: p= 0.35 and Ha: p 241.35 Calculate the observed zstatistic for the following sample data. Forty out of eighty test subjects have the characteristic of interest. Round to the nearest hundredth. {.I- A. 2: '1.8? we. 2:231 c. z: u_94 E1. 2:1.83