Use binomial distribution, with p=0.20, n=20, x=3
P(X=x)=C(n,x)p^x (1-p)^(n-x)
P(X>=3)
=1-(P(X=0)+P(X=1)+P(X=2))
=1-(C(20,0)0.2^0 (0.8)^(20-0)+C(20,1)0.2^1 (0.8)^(20-1)+C(20,2)0.2^2 (0.8)^(20-2))
=1-(0.0115292+0.057646+0.136909)
=1-0.206085
=0.793915
Answer:
The absolute value is 7.
Step-by-step explanation:
Because when a number has two lines between it you always make it positive.
Step-by-step explanation:
The magnitude of x is equal or less than 7.
=> We have |x| <= 7.
Answer:
17.5 i think
Step-by-step explanation:
2+3+1.5+2+9=17.5
Hm. good question! multiply 5x2 i believe, which should be 10. Hope I helped!
