This is a binomial distribution.
p = 0.71, q = 1 - p = 1 - 0.71 = 0.29, n = 20
P(x ≤ 19) =1 - P(x = 20) = 1- 20C20 x (0.71)^(20 - 20) x (0.29)^20 = 1 - 0.29^20 = 1 - 0 = 1
Answer:
20xp
Step-by-step explanation:
13
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Answer:
I believe its D
Step-by-step explanation:
Answer:
49
Step-by-step explanation:
cos(x)=31/47
x=cos^-1 (31/47)