You would like to investigate whether smokers are more likely than nonsmokers to get lung cancer. You take the students in your class, select half at random and tell them to smoke a pack of cigarettes each day, and you tell the other half not to ever smoke. Fifty years from now, you will analyze whether more smokers than nonsmokers got lung cancer. Is this an experiment or an observational study? O Experiment O Observational Study Summarize at least three practical difficulties with this planned study.

Q: Find "x" and BC if B is between A anc

A: NOTE: Refresh your page if you can't see any equations. . here we have

Q: -y(0)-0, x(0) = 0, y (0) - em of differential equations can be e first order with the help of the…

A: Given as, x¨= y˙ -1 . , y¨=-x-2      u=x˙ and v=y˙       u˙=x¨  v˙=y¨

Q: How do I solve this ?

A: Inverse property

Q: How do I solve this?

A: given number of people probability 1 0.25 2 0.32 3 ? 4 ? 5 0.07 6 0.03 7+ 0.01…

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A: This question can be solved using formula for reducing powers cos A2=1+cos(2A)2

Q: I need help solving for parts a-c

A: The data is paired when the data is generated using the same subjects at two different conditions.…

Q: t 3"

A:

Q: We are working in R². Let & be the standard basis, B be the basis formed by {(2, 1), (0, −1)}, and C…

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Q: The point is i need explanation on how to solve each question.

A: Hi thanks you for posting this question  , since you have posted multiple subparts as per our policy…

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A:

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A: The given equation is y =2x^3 -5x.The values of x =-2 and delta x= 0.1.

Q: Hello, could you possibly outline the steps used to solve all parts of steps 3 and 4. I understand…

A:

Q: How do I solve this ?

A:

Q: cal values for quick reference during this activity. nfidence level Critical value 30 = 1.645 95 99…

A: We have given that,  Confidence interval = 99% or 0.99 and margin of error (E) = 2.83% = 0.0283

Q: How do I solve this ?

A:

Q: Please show step by step solution for problem b

A:

Q: is there no step 3 to this solution? and why does it end like that like what exactly would be the…

A: There is no any step 3. i am going to derive equation again.

Q: How do I solve #4-6?

A: Solution :-

Q: how do i solve this?

A: Given that: The table ,

Q: an more work be shown on how to solve this

A: By using a scalar projection to find the shortest distance from the point 1,-2, 5to the plane given…

Q: How do I solve this?

A: Consider the given functions

Q: There is no solution and unclear description of the process to solve the problem.

A: .

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A: Given that We have to find z score that divide a normal distribution The middle 25% from the 75% in…

Q: How do you solve this

A: Given vectors: Denote the given two vectors as A and B.

Q: 0 = A + Bln 4 1 = A + Blm 6 Solve for A, B

A: Ans : A = -3.419 and B = 2.466Explanation:Explaination:

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A: To determine the values of x, y and z satisfying the simultaneous equations

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A: Solve for to finish the test if they work together

Q: 0 11 1. L 0 6 6 0 6 b1 = -10 b2 = 1. 6 200 - 200 b3: 6

A:

Q: how do we go about solving the last two parts?

A: