Mean for each hour = 1
Mean for four hours, m = 4
P(x,m)=m^x*e^(-m)/x!
where x is number of defects.
P(X<=3,4)
=P(X=0,4)+P(X=1,4)+P(X=2,4)+P(X=3,4)
=0.01832+0.07326+0.14653+0.19537
=0.43355
Probability of at most 3 defects in four hours is 0.43355
1. - 4^3 = -1 * 4*4*4 = - 64
2. (-4)^3 = (-4)(-4)(-4) = - 64
3. 4^3 = 4 * 4 * 4 = 64
Answer:
When adding two fractions with a common denominator, you do NOT add the denominators together. Therefore, we can say + = and not .
Hope this helps and stay safe and healthy in quarantine!