Mean = np = 50*0.10 = 5
Standard deviation = = 2.121
Hence,
P(More than 12)
= P(X > 12.5) [Continuity Correction]
= P(z > (12.5 - 5)/2.121)
= P(z > 3.54)
= 0.0002
s. Assume that 10% of the adult population is left-handed. If 50 adults are randomly selected,...
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