<span>a) The cell corresponding to a positive diagnosis when the
person has antibodies present as well as the cell for a negative diagnosis when
the person has no antibodies present are the cells representing a CORRECT
diagnosis.
</span>
The cell corresponding to a negative diagnosis when you
actually have antibodies present is called a FALSE NEGATIVE and is considered
as a TYPE II error.
The cell corresponding to a positive diagnosis when you
actually don't have antibodies present is called a FALSE POSITIVE and is considered
as a TYPE I error.
For the tree diagram for the questions below, refer to the
picture attached.
b) To know the probability that a person without HIV will be diagnosed positive (false positive), we just trace the tree diagram from population to "antibodies not present" to "positive". The tree diagram will give us a value of 0.00588.
ANSWER: The probability of a false positive is 0.00588 or 0.588%.
c) We do the same thing as the previous subproblem to determine the probability that a person with HIV will be diagnosed as negative. We trace the tree diagram from population to "antibodies present" to "negative". The tree diagram will give us a value of 0.003.
ANSWER: The probability of a false negative is 0.003 or 0.3%.
d) Same thing for this subproblem. We trace the tree diagram from population to "antibodies present" to "positive" to know that the value is 0.01997.
ANSWER: The probability that a person with HIV will be diagnosed as positive is 0.01997 or 1.997%.
Answer:
a) $432
b) (i) $8970
Step-by-step explanation:
Given that:
Ratio of Cost of Hansi and Megan is 7 : 4.
Hansi's holidays cost = $756
Hansi's earnings in 2008 = $7800
In 2009, there are 15% more earnings than in 2008.
To find:
Cost of Megan's holiday.
Earnings in 2009 ?
Solution:
As per given question statement,
Let the holiday cost of Hansi = 7
Let the holiday cost of Megan = 4
As per question statement:
We have to find the value of 4 now.
b)(i)
Earnings in 2009:
$7800 + 15% of $7800
Answer:
its either A or C
Thats the best i could do
Step-by-step explanation:
You make the denominators the same. The LCM of 6 and 8 is 48, so we are going to make the denominators 48.
6 x 8 = 48
8 x 6 = 48
So now we have 5/48 and 5/48. But because we changed the denominators, we need to change the nominators accordingly.
So for 5/48 (originally 5/6) we multiply 5 by 8, and for 5/48 (originally 5/8) we multiply 5 by 6.
5 x 8 = 40
5 x 6 = 30
So now we have 40/48 (originally 5/6) and 30/48 (originally 5/8).
5/6 is greater than 5/8
Hope this helps!
Answer:
0
Step-by-step explanation:
1/2 times 4 is 2 and 2 minus 2 is 0