DETAILS DEVURESTAT9 5.E.02 nas given a short quiz consisting of two pa that the joint pmf of X and Y is given in p(x, y) 0 10 15 0.03 0.06 0.02 0.10 0.04 0.13 0.20 0.10 10 0.01 0.15 0.15 0.01 score recorded in the grade book is the tc e maximum of the two scores is recorded, Help? Watch It Read It Master Es] DETAILS PREVIOUS ANS the standard deviation of a sampling distril e variance

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DEVORESTAT9 5.E.022.MI.
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An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y = the number of points earned on the second
part. Suppose that the joint pmf of X and Y is given in the accompanying table.
P(x, y) 0
10
15
0.03 0.060.02 0.10
0.04 0.13.0.20 0.10
10
0.01 0.15 0.15 0.01
(a) If the score recorded in the grade book is the total number of points earned on the two parts, what is the expected recorded score E(X + Y)? (Enter your answer to one decimal place.)
(b) If the maximum of the two scores is recorded, what is the expected recorded score? (Enter your answer to two decimal places.)
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BBUNDERSTAT12 6.5.002.
What is the standard deviation of a sampling distribution called?
O the variance
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Transcribed Image Text:人 oー + (-12 PUILS] DETAILS DEVORESTAT9 5.E.022.MI. MY NUTES ASK YUUR IEACHER PRACTICE ANOTHER An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y = the number of points earned on the second part. Suppose that the joint pmf of X and Y is given in the accompanying table. P(x, y) 0 10 15 0.03 0.060.02 0.10 0.04 0.13.0.20 0.10 10 0.01 0.15 0.15 0.01 (a) If the score recorded in the grade book is the total number of points earned on the two parts, what is the expected recorded score E(X + Y)? (Enter your answer to one decimal place.) (b) If the maximum of the two scores is recorded, what is the expected recorded score? (Enter your answer to two decimal places.) Need Help? Watch It Read It Master It MY NOTES ASK YOUR TEACHER 6. [1/1 Points] DETAILS PREVIOUS ANSWERS BBUNDERSTAT12 6.5.002. What is the standard deviation of a sampling distribution called? O the variance MacBook Pro へ "0.3" esc #3 $ % & %3D @ 6 7 8 9 4 5 1 R T
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