The answers are choice A) and choice C). They effectively say the same thing but in a slightly different way. Choice A is more algebraic while choice C is more visual.
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.
6 Winston I got the addy and
4 because .4 is 4 tenths so 40 tenths would be 4
Multiply 912 x 512 x 3 = ? then divide your answer by 12 .
