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3 years ago

10

Can you please solve number 7. And could you please include steps. Thanks

1 answer:

dezoksy [38]3 years ago

4 0

So, each day Tami's laps are 3 more than Kelly's. Why? Well, If you divide (on day two) 6 by 2 you get 3 and 3 laps is what Kelly had for that day. And for the table it looks like the number of laps completed multiplied by 2. Like, Tami's was 2 day and 6 laps. 3 day, 12 laps. Ask me if you need more help explaining. :)<span />

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Step-by-step explanation:

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Someone has conducted a study to see if there is increased risk of getting lung cancer if you work in a coal mine. In group 1, 3

AleksandrR [38]

Answer:

Sample relative risk is 10.

Step-by-step explanation:

We are given the following in the question:

Group 1 of coal miners: 30 out of 150 get lung cancer.

$\text{P(Lung cancer for coal miner)} = \dfrac{30}{150} = \dfrac{1}{5}$

Group 2 of non-coal miners: 5 out of 250 get lung cancer

$\text{P(Lung cancer for non-coal miner)} = \dfrac{5}{250} = \dfrac{1}{50}$

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 =

$\dfrac{\text{P(lung cancer for coal miner)}}{\text{P(lung cancer for non coal miner)}}\\\\=\dfrac{\frac{1}{5}}{\frac{1}{50}} = \dfrac{50}{5} = 10$

Thus, sample relative risk is 10.

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3 years ago

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elena-s [515]

Give them all the same decimal places and then compare:

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Step-by-step explanation:

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