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BabaBlast [244]
3 years ago
13

A cohort study was conducted to study the association of coffee drinking and anxiety in a population-based sample of adults. Amo

ng 10,000 coffee drinkers, 500 developed anxiety. Among the 20,000 non-coffee drinkers, 200 cases of anxiety were observed. What is the relative risk of anxiety associated with coffee use?
Mathematics
1 answer:
azamat3 years ago
6 0

Answer: Relative risk of anxiety associated with coffee use is 5 times the anxiety associated with non coffee use.

Step-by-step explanation:

Since we have given that

Number of coffee drinkers = 10000

Number of whom developed anxiety = 500

Number of non coffee drinkers = 20000

Number of whom developed anxiety = 200

So, probability of getting anxiety from coffee drinkers = \dfrac{500}{10000}=0.05

Probability of getting anxiety from non coffee drinkers = \dfrac{200}{20000}=0.01

so, Relative risk of anxiety associated with coffee use is given by

\dfrac{0.05}{0.01}=5

Hence, Relative risk of anxiety associated with coffee use is 5 times the anxiety associated with non coffee use.

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Find the area.
lana [24]

Answer:

Step-by-step explanation:

The area of a triangle is commonly described as one half times the base times the height.  A better way to describe it though might be  one half times the base times the length from the highest point to the base.  A bit more of a mouthful but it helps get rid of confusion in cases like this.

So, the distance from the base to the highest point is 25 mm and the base itself is 11 mm.  That 23 doesn't mean anything here and the 35 is the length of one of the sides, but not the base or the height, so it's not used.  Anyway, we have the values we need.

(1/2)11 * 25 = 137.5

3 0
3 years ago
Find the length of an altitude of an equilateral triangle with sides of 4 cm.
olchik [2.2K]

Answer:

c.

Step-by-step explanation:

Altitude of Equilateral Triangle h = (1/2) * √3 * a. Angles of Equilateral Triangle: A = B = C = 60° Sides of Equilateral Triangle: a = b = c.

8 0
2 years ago
How many dimensions does a line segment have​
Natalija [7]

Answer:

A line segment has one dimensions.

Step-by-step explanation:

A line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints.

Dimension is an aspect or feature of an object.

A line segment, let us say AB has two endpoints and has only one measurable feature that is its length which is actually the distance between the two end points A and B.

Hence, a line segment is one-dimensional.

4 0
3 years ago
Can someone put this in order
zaharov [31]
The first has value 2500*(1+.05*9)=3625.  The second, similarly, has value 4160, and the third, 3400.  Thus, the order, from least to greatest, is third, first, second.
3 0
2 years ago
Keith exercises x hours a week. Troy exercises three hours less than Keith and Joe exercises two times more than Troy. Which exp
umka21 [38]
If Keith is represented by x, and Joe is three less than Keith, Troy is represented by x-3. 
Then, we know that Joe exercises for twice the amount of time as Troy, we multiply the expression for Joe by two. 

Keith = x
Troy = x-3
Joe = 2(x-3)
4 0
3 years ago
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