20. The following table summarizes data collected in a study to evaluate a new screening test for ovarian cancer. A total of 200 women were involved in the study - 50 had ovarian cancer and 150 did not. The results are tabulated below. Ovarian Cancer Free of Ovarian Cancer Screening Test Positive 28 23 Negative 22 127 50 150 a. Find the sensitivity of the screening test. b. Find the false positive fraction of the screening test. C. What proportion of women who screen positive actually have ovarian cancer?

Q: 24 12 XD

A:

Q: a3-16a

A: a³−16a ⇒a(a²−16) ⇒a(a² −4²) ⇒a(a+4)(a−4)

Q: n-6=5

A: Here we have to find the value of n =?  3n-6=5n

Q: LCM(77, 18) =

A: We have to find the LCM of 77 and 18.

Q: Combination C.  (87,1)

A: Given:              C87, 1 The number of k-combinations from a given set S of n elements can be…

Q: 16 - (9 - 4) ÷ 5 =

A:

Q: 22n+1 3n+1 2.

A:

Q: 1b+1b

A: Applying  addition operation since terms with same variable  binomial addition

Q: 7,20

A:

Q: 3p - p

A: Here Given that, 3p-p

Q: 11+11-12=

A:

Q: 9 b and c

A: b) We check if the denominator is 0 for any value of x.  2x2+5=0 2x2=-5 x2=-5/2 (not possible) So…

Q: 5у 10y

A: Given,    5y/10y    Cancelling y from both numerator and denominator to get,    5/10   Now, 5/10 can…

Q: graph shows the relationship between the volume of the dilated box and the scale factor. diusuon 5.…

A:

Q: 3. Identify all the cycles at each node of the directed graph above.

A: Cycle is defined as a path that start and end at the same vertex.

Q: Identify the coordinates of the point in polar form based upon the given conditions. Use pi for T. r…

A: We will evaluate the required value.

Q: 12 + 12 = 10 + 10 =

A:

Q: 36-9z

A: Given that:36-9z

Q: 4. Fill in the following contingency table with the number of observations that fall into each com-…

A: x1 = number of colored oranges from Skittles brand = 77 x2 = number of colored oranges from M &…

Q: 12 16

A: We know that If a perpendicular is drawn from the vertex of right angle triangle of a right triangle…

Q: Part 1,2,3

A: The point is, 6,-2 So, the point is in 4th quadrant.

Q: (5,19),(8,18),(10,14),(12,7) find the value of r and round to four decimals

A:

Q: 7

A:

Q: 6 - 8 =

A: 6-8= -2

Q: 11 35

A:

Q: 4 -3 3 -1 0 -2 5. 3 2 A = B = 0 -1 4

A: Given         A =    4-3  3-1   0-2-1   5  , B=-1    3  2-2   0 -1  4-3 AB  =    (4×-1)+(-3×0)…

Q: 6. Using the data from the contingency table, obtain the value of the test statistic of our test. 7.…

A: Step 1: Given: x1 = number of colored oranges from Skittles brand = 77 x2 = number of colored…

Q: 75 + フチ + k「3

A:

Q: iv. Un 32n

A:

Q: Two and two

A: Given:   Two and two

Q: k 24

A: First we solve the inequality. ANd for that , we divide both sides by -6 .And on dividing by…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.