Answer:
Step-by-step explanation:
Given that among employed women, 35% have never been married. Select 11 employed women at random.
a) probability for success in each trial p = 0.35 and no of trials = n =11
b) the probability that exactly 3 of the 11 women in your sample have never been married=
P(X=3) = ![11C3 (0.35)^3 (0.65)^8\\= 0.001367](https://tex.z-dn.net/?f=11C3%20%280.35%29%5E3%20%280.65%29%5E8%5C%5C%3D%200.001367)
c) the probability that 2 or fewer women have never been married
=![P(X\leq 2)\\=0.2001](https://tex.z-dn.net/?f=P%28X%5Cleq%202%29%5C%5C%3D0.2001)
Answer:
(x + 3)(2x + 5)
Step-by-step explanation:
Given
2x² + 11x + 15
Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term
product = 2 × 15 = 30 and sum = + 11
The factors are + 6 and + 5
Use these factors to split the x- term
2x² + 6x + 5x + 15 ( factor the first/second and third/fourth terms )
= 2x(x + 3) + 5(x + 3) ← factor out (x + 3) from each term
= (x + 3)(2x + 5)
Answer:
52.5
Step-by-step explanation:
=24.5/7
=3.5
Then
3.5*15
=52.5 ans#