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Alik [6]
3 years ago
15

Suppose that 350 cervical cancer cases were identified and a random sample of women of the same age range who were admitted to t

he hospital included 500 eligible controls. After independent blood tests of all cases and controls, 90% of cases were positive for HPV antibodies while 63% of controls were positive for antibodies to the virus. What is the appropriate measure of association and its value? choose answer:
a)The ratio of the odds of exposure among cases and controls equal to 5.3

b)The ratio of HPV-exposed percentages equal to 1.4

c)The number of exposed cases divided by the number of exposed controls equal to 1.0

d)The number of nonexposed cases divided by the number of nonexposed controls equal to 0.2

please show work
Mathematics
1 answer:
11111nata11111 [884]3 years ago
5 0

Answer:

a)The ratio of the odds of exposure among cases and controls equal to 5.3

Step-by-step explanation:

Correct option is:

The ratio of the odds of exposure among cases and controls equal to 5.3

Solution:

Odds for cases=0.9/0.1=9

Odds for controls=0.63/0.37=1.703

Odds ratio=9/1.703=5.3

Hence the correct option is  a)The ratio of the odds of exposure among cases and controls equal to 5.3

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The polygons are similar. but they are not necessarily drawn to scale. Find the value of x
Ne4ueva [31]

Answer:

x=9

Step-by-step explanation:

Since the polygons are similar, the ratios of their respective sides are equal.

32/24=(x-1)/6

x-1=8

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3 years ago
In the xy-plane, the equations x + 2 = 10 y and 3 +6 = x y c represent the same line for some constant c. What is the value of c
aalyn [17]

Answer:

C=30

Step-by-step explanation:

Supposing that we have the lines

x+2=10y

and

3x+6=Yc.

Note that dividing by 3 the second line can be rewritten as

x + 2= Y c/3.  

Remember that a line is written as ax+b=dY, in our case, both lines have a=1 and b=2. Therefore, in orther that the two lines are equal, we need that 10=c/3, hence c=30.

3 0
3 years ago
Select the correct answer
Marta_Voda [28]

Answer:

c

Step-by-step explanation:

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6 0
3 years ago
Vector v has a direction of (5,3) find the direction angle for v to the nearest degree
Vesnalui [34]

Answer:

31^{\circ}

Step-by-step explanation:

We have been given that vector v has a direction of (5,3). We are asked to find direction angle for v to nearest degree.

We know that direction of vector with components (a,b) can be determined by \theta=\text{tan}^{-1}(\frac{b}{a}).

Upon substituting the components of given vector in above formula, we will get:

\theta=\text{tan}^{-1}(\frac{3}{5})

\theta=30.9637565^{\circ}

Upon rounding to nearest degree, we will get:

\theta\approx 31^{\circ}

Therefore, the direction angle for vector v is 31 degrees.

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3 years ago
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