Mathematics, 15.12.2020 17:00 lazarus10

A screening examination was performed on 250 persons for Factor X, which is found in disease Y. A definitive diagnosis for disease Y among the 250 persons had been obtained previously. The results are charted below: TEST RESULTS Disease Present Disease Absent
Positive for Factor X 40 60
Negative for Factor X 10 140

The specificity of this test is expressed as:

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 19:20

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Answers: 2

Answer

Mathematics, 21.06.2019 21:00

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

Answers: 1

Answer

Mathematics, 22.06.2019 01:10

Evaluate 8x2 + 9x − 1 2x3 + 3x2 − 2x dx. solution since the degree of the numerator is less than the degree of the denominator, we don't need to divide. we factor the denominator as 2x3 + 3x2 − 2x = x(2x2 + 3x − 2) = x(2x − 1)(x + 2). since the denominator has three distinct linear factors, the partial fraction decomposition of the integrand has the form† 8x2 + 9x − 1 x(2x − 1)(x + 2) = correct: your answer is correct. to determine the values of a, b, and c, we multiply both sides of this equation by the product of the denominators, x(2x − 1)(x + 2), obtaining 8x2 + 9x − 1 = a correct: your answer is correct. (x + 2) + bx(x + 2) + cx(2x − 1).

Answers: 3

Answer

Mathematics, 22.06.2019 03:30

Select all of the categories that apply for the figure below. quadrilateral, trapezoid, parallelogram, rhombus, rectangle, square

Answers: 3

Answer

You know the right answer?

A screening examination was performed on 250 persons for Factor X, which is found in disease Y. A de...

Questions

Mathematics, 29.04.2021 01:00

Someone pls help me with this pls it’s probability. Andres found out that his experimental probability of getting a hit is 40%. Out of 350 at bats,...

Mathematics, 29.04.2021 01:00