A critical orthopedic surgery is performed on 3 patients. The probability of recovering
a patient is 0.6. Then the probability that after surgery, exactly two of them will recover
is
🎥 Video solution / Text Solution of this question is given below:
Given:
Number of patients (n): 3
Probability of recovery (p): 0.6
Probability of failure (q): 0.4
We are asked to find: Probability that exactly 2 out of 3 patients will recover.
Solution: We will use the Binomial Probability Formula to solve this.
Step 1: Binomial Probability Formula:
The formula is:
$$ P(X = r) = \binom{n}{r} p^r (1 - p)^{n - r} $$
Where:
\( n = 3 \), \( r = 2 \), \( p = 0.6 \), \( 1 - p = 0.4 \)
Step 2: Calculate the binomial coefficient \( \binom{3}{2} \):