n H.w2: A civil service examination was given to 200 people. On the basis of their total scores, they were divided into the upper 30% and the remaining 70%. On a certain question 40 of the upper group and 80 of the lower group answered correctly. On the basis of this question, is this question likely to be useful for discriminating the ability of the type being tested?

Q: Solve it now

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Q: How did you get those answers?

A: Since here we have two variables p and q, they can take values True (T) and False (F) each.  So, the…

Q: Why I cannot find that answer? Can you label the answer out?

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Q: (p) | (2) dz =.

A: From x=3 to x=5, there is a triangle with base= 2 and height = -3  So the area of the triangle is:…

Q: he answer is still wrong

A: Sol:-We need to use Bayes' theorem to calculate this probability.  Let A be the event that Stage 3…

Q: What is your answer? Can you write it clearly?

A: Given that,Let P be the set of all vectors of the form 7s+2tst , where s and t are arbitrary.We need…

Q: answer question 4.

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Q: The table shows the movement of a stock for 30 randomly selected trading days. "Up" means the stock…

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Q: I need help solving this question.

A: You need to know this before solving the question.

Q: How did you figure out the answers? Can you show your work

A: Doubt: How did you figure out the answers.