35 % of people is blood yre A a) 2so people Suppose jzlerted from lorge popiation 250 rondormly. biromiai find mean and standerd deviation of this distribution of the nmber with people blood type A. b) Suppose 250 selected frem a large populator ppeximation to find probabilit and go Cincluding 70 cnd 9)- people rondomly Use normal 70 that bet veen CS Sanhechevth CelanScagaerA.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.