Hello,
please try to solve this question.Thanks.
Question no:1
The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known to have contracted this disease, what is the probability that:
(a)at least 10 survive
(b)from 3 to 8 survive
(c)exactly 5 survive
Hello, m777!
Who asks these questions?
Do they really expect us to crank out these answers?
The probability that a patient recovers from a rare blood disease is 0.4.
If 15 people are known to have contracted this disease, what is the probability that:
(a) at least 10 survive
(b) from 3 to 8 survive
(c) exactly 5 survive
(a) "At least 10" means: 10 or 11 or 12 or 13 or 14 or 15.
. . Now add them up . . .
(b) "From 3 to 8" means: 3 or 4 or 5 or 6 or 7 or 8.
.
. . You get the idea . . .
(c) Exactly 5 . . . We did this one in part (b).