Find the probability that the number of successes is between 680 and 750
What will be an ideal response?
P(680 < X < 750 | n = 1800, P = 0.40 ) ? P(680 < X < 750 | ? = 720, ? = 20.785 )
= P(-1.92 < Z < 1.44 )
= 0.4726 + 0.4251 = 0.8977
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