Answer:
0.475: Z = -0.062706778
0.525: Z = 0.062706778
Step-by-step explanation:
Using conditional probability, it is found that there is a 0.4235 = 42.35% probability that the patient really is HIV positive.
Conditional Probability
In which
- P(B|A) is the probability of event B happening, given that A happened.
- is the probability of both A and B happening.
- P(A) is the probability of A happening
In this problem:
- Event A: positive test.
- Event B: HIV positive.
The percentages involving a positive test are:
- 95% of 3%(positive)
- 4% of 100 - 3 = 97%(not positive).
Hence:
The probability of both having a positive test and being HIV positive is:
Then, the conditional probability is:
0.4235 = 42.35% probability that the patient really is HIV positive.
A similar problem is given at brainly.com/question/14398287
Answer:60
Step-by-step explanation:
Pythagorean's theorem gives us 100^2-80^2=b^2
Simplifying this we get:
10000-6400=b^2
3600=b^2
b=60
The factorization of the polynomial is
Step-by-step explanation:
We need to Complete the steps to factor by grouping.
After grouping:
Factor the GCF from each group.
Use the distributive property.
So, the factorization of the polynomial is
Keywords: factorization by grouping
Learn more about factorization by grouping at:
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