MorrisAshley
01.12.2021 •
Mathematics
What is the probability of drawing a w, i, and n in order without putting it back
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Ответ:
Find each of the probability :
P(13 correct) = 18C13 (0.5)¹⁸ = 8568 / 262144
P(14 correct) = 18C14 (0.5)¹⁸ = 3060 / 262144
P(15 correct) = 18C15 (0.5)¹⁸ = 816 / 262144
P(16 correct) = 18C16 (0.5)¹⁸ = 153 / 262144
P(17 correct) = 18C17 (0.5)¹⁸ = 18 / 262144
P(18 correct) = 18C18 (0.5)¹⁸ = 1 / 262144
Find sum of the above probability :
Find P( ≥ 13 correct) = ( 8568 + 3060 + 816 + 153 + 18 + 1) / 262144
Find P( ≥ 13 correct) =12616/262144
Find P( ≥ 13 correct) = 1577/32768
Find P( ≥ 13 correct) = 0.048
0.048