Complete Question
The complete question is shown on the first uploaded image
Answer:
The first option is the correct option
Step-by-step explanation:
From the question w are told that
The value of shares for A&D in 2 years is $150
The value of share for peer comms Ltd is $275
The number of more share that you can buy fro A&D compared to peers comms Ltd is
$125
Answer:
or 0.2 or 20%
Step-by-step explanation:
For only two tests to be needed this means that the first test would need to come back as negative and the second test would be to come back as positive. Therefore, to find the probability of this happening we first need to find the probability of each individual test and multiply them together.
The first test needs to come back negative, there are four negative individuals out of the total 5 that are in the group. Therefore, the probability of the first test is 4/5.
Now we remove the individual that has just been tested and we are left with 4 total subjects in the group, of which only 1 is positive. Therefore, the probability of the second test is 1/4. Now we need to multiply these two probabilities together to get the probability of only needing two tests.
or 0.2 or 20%