A previous student of this class was curious about the relationship between number of hours a person slept before an exam and the number of correct answers on the exam. She asked a sample of 5 people from her residence hall the number of hours they slept before their first exam and the number of correct answers they got on their first exam. The data are: Number of hours slept Number of correct before exam: X answers on exam: Y XY X2 Y2 8 10 9 7 15. Evaluate the Null Hypothesis (Reject or Fail to reject?). Use the attached table. How did you make your decision? What is your conclusion about the two variables?

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A: Given  95% CI for mu men - mu women is  (-10.67,-1.13)

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A: Given  P(X=0)=0.34, P(X=1)=0.25, P(X=3)=0.20 P(X=2)=?

Q: 2. A psychologist estimates the I.Q of 28 students. The values are as follows: 103, 86, 94, 97, 100,…

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Q: 2 (a) Show that the joint pdf for U, V is of the form f(r, y) = {2 exp(-u-v), if (u, v) E A…

A: The Jacobian method of transformation will be used to determine the joint pdf of U and V.

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A: The distribution of test score is Test scores  Frequency 31-40 4 41-50 3 51-60 5 61-70 8…

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Q: Which value of r indicates a stronger​ correlation: r=0.834 or r=−0.914​?

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A: Given:- Below is the least-squares regression equation: In (y) =  0.76 + 0.0914x.

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Q: (a) If two are selected at random to leave the room, what is the probability that they are of…

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Q: MY NOTES PRACTICE ANOTHER The sample mean is x 17.1. Generally speaking, a low P/E ratio in the P/E…

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A: Solution-: Given: n=40,x=28,P0=0.5 Hypothesis:               H0:p=P0=0.5  Vs H1:p≠0.5          (Two…

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Q: 3) (4 points) Consider a population with the mean u= 51, 000 and the standard deviation o = 5,000.…

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