Answer:
The specificity of this test is expressed as:________
70%.
Step-by-step explanation:
a) Data and Calculations:
TEST RESULTS Disease Present Disease Absent Total
Positive for Factor X 40 60 100
Negative for Factor X 10 140 150
Total 50 200 250
Negative for X and Disease Absent = 140/200 * 100
= 0.7 * 100
= 70%
b) The specificity refers to the percentage of people who test negative for a specific disease among a group of people who do not have the disease. No test is 100% specific because some people who do not have the disease X will test positive for it (false positive). Therefore, we are testing for the true negative, that the 140 people who tested out of the 200 people who do not have the disease.
Answer: go to 10 the over 7 right im pretty sure
Step-by-step explanation:
Using the principle of probability, the probability that the outcome of both spins does not land on "<em>bankrupt</em><em>"</em><em> </em>is 1/144
<u>Given</u><u> </u><u>the</u><u> </u><u>Parameters</u><u> </u><u>:</u>
- Total Number of possible outcomes = 24
- Number of outcomes labeled bankrupt = 2
- Labels which aren't labeled bankrupt = 24 - 2 = 22
<u>Recall</u><u> </u><u>:</u>
- P(A) = <em>required</em><em> </em><em>outcome</em><em> </em><em>/</em><em> </em><em>Total</em><em> </em><em>possible outcomes</em><em> </em>
<u>First</u><u> </u><u>spin</u><u> </u><u>:</u>
- P(not bankrupt) = 2 / 24 = 1/12
<u>Second</u><u> </u><u>spin</u><u> </u><u>:</u>
- P(not bankrupt) = 2/24 = 1/12
P(<em>neither</em><em> </em><em>lands</em><em> </em><em>on</em><em> </em><em>bankrupt</em><em>)</em><em> </em><em>=</em><em> </em>1/12 × 1/12 = 1/144
Therefore, the probability that neither lands on bankrupt is 1/144
Learn more : brainly.com/question/18405415
Answer:
20x+8
Step-by-step explanation:
in a rectangle, the sides opposite from each other are equal, and finding the perimeter means you going to add all the sides together
therefore we have
4x-1+4x-1+6x+5+6x+5=20x+8
