17795
13.03.2021 •
Mathematics
What happens to the linear function of y = mx + b when the m is positive compared to when the m is negative
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Ответ:
Solution:
P(x₁ ≥ 70)
Z= (x-µ)/σ
µ = np
σ = √np(1-p)
P(x₁ ≥ 70) = p(x₁-np₁/√np₁ (1-p₁) > 70 – (150*0.51)/√150*0.51*0.49)
= p( z₁ ≥ -1.1433)
= 1-p (z₁ ≤ -1.1433)
= 1- 0.1265
= 0.8735