Question

(12) The probability that a man aged 65 will live to 75 is 0.65. What is the probability that out
of 10 men which are now 65, at least 7 will live to 75?
din in throun times what is the nrnhahility of obtaining (a) at least one six​

Answer 1

Answer:

p(7) = 0.2522

Step-by-step explanation:

Given:- p = 0.65,

q = 1 - p,

q = 1 - 0.65= 0.35,

n = 10,

r = 7

By using

Answer 2

Answer:

p(7)= 0.2522

Step-by-step explanation:

using binomial distribution

p= 0.65

q=1-p

=1-0.65

=0.35

r= 7

n=10

now,

p(r)= ñçr×(p^r)×(q^n-r)

= 10C7 ×(0.66^7)×(0.36^3)

use engineering calculator

=0.2522