Answer:
P (A ║ B) = 1.98 %
Step-by-step explanation:
Bayes´ Theorem express
P (A ║ B) = P(A) * P( B ║ A) / P(B)
Now we identify
Event A person infected with a virus. Probability of being infected by a virus is P/A) 0.001
Event B the test was positive. Probability of test positive P(B) = 0,05
Probability of P ( B║ A) is the porbability of test positive given that is infected = 0.99
Then by subtitution in a general equation of the theorem we have
P (A ║ B) = 0.001*0.99/ 0.05
P (A ║ B) = 0.0198 P (A ║ B) = 1.98 %
Answer:
A is correct answer
Step-by-step explanation:
If you add the two b's then it would be "2b" which is equivalent to the the other problem on the other side of the equal sign which is 2b + 3c
Y/x=k 48/8=6=k k is the constant y/4=6 y=24
Answer: 
Step-by-step explanation:
Given, A class has five boys and nine girls.
Total students = 5+9=14
Number of ways to choose 6 students out of 14= 
[Using combinations]
Number of ways to choose 4 girls out of 6 (4 girls + 2 boys = 6 ) = 
If the teacher randomly picks six students, then the probability that he will pick exactly four girls:-
hence, the required probability = .
The answer to the first question is complementary angles.
The measure of angle WOV is 60
the answer to the third question is vertical angles.
The measure of YOZ is 60 because vertical angles are equal to each other and YOZ is vertical to WOV
