Answ
Step-by-step explanation:
The numbers are 21 and 28.
Answer: Pr(test positive ) = 0.38.
Step-by-step explanation:
Since we have given that
Probability of getting a certain disease = 0.2
Probability of not getting a certain disease = 1-0.2 = 0.8
Probability that test turns a positive results for those with the disease = 90% = 0.90
Probability that turns a negative results for those without diseases = 75% = 0.75
Probability that turns a positive results for those without diseases = 1-0.75=0.25
So, Probability of test positive is given by
P(having diseases) . P(test positive) + P(not having diseases) . P(test positive)
Hence, Pr(test positive ) = 0.38.
Answer:
Step-by-step explanation:
Given
Require
Solving (a):
Subtract 24 from both sides
Divide both sides by 2
Solving (b):
Substitute 330 for P un the expression in (1)
Evaluate the bracket
<em>Question c; seem irrelevant</em>
Answer:
Step-by-step explanation:
If you see a negative sign in the power, you will place the number and power over 1:
15^-6 = 1/(15^6)
Simplify. Solve 15^6:
15^6 = 15 * 15 * 15 * 15 * 15 * 15 = 11,390,625
1/11,390,625 is your simplified answer.
However, note that you are solving for a positive exponent. Your answer will be: