200 students speak Spanish. Because 20% of 1000 is 200.
Answer:
gay
Step-by-step explanation:
gay by gay
Answer:
Sample relative risk is 4.
Step-by-step explanation:
We are given the following in the question:
Group 1 of smokers: 10 out of 100 get lung cancer.
Group 2 of non-smokers: 5 out of 200 get lung cancer
Sample relative risk:
- It is the ratio of probability of an outcome in an exposed group to the probability of an outcome in an unexposed group.
Sample relative risk =
Thus, sample relative risk is 4.
Answer:
m=20
Step-by-step explanation:
m-9=11
m-9+9=11+9
m=20
Answer:
The number is 15.
Step-by-step explanation:
If you look closely, the sum of any two adjacent boxes in the bottom row gives the number in the top row. For example, the sum of the first two boxes 27 and 18 gives the number 45.
27+18 = 45
Similarly,
21+x = 36 (Third and fourth boxes in bottom row)
Solving, we get x=15.
We can confirm this by checking with the last two boxes.
x+13 = 28
x=15
So, the answer is 15.
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