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Unformatted text preview: MATH230 Spring 2008 Name: K6 C9
Quiz 5 Blue Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. 30 31 32 33 T 10:00 T 9:00 R 9200 R 11:00 ﬂf Pr(r successes) = C (n, r) p’ (1 — p) Questions 1, 2: A box has 5 good oranges and 4 rotten ones. Two oranges are selected simultaneously and at
random. A random variable X is deﬁned to be the number of rotten oranges selected. 1. 2 points What are the possible values of X? 0/1,;
2. 4 points Find the density function of X.
x Pray,
C(q/L) T 36
c(t<,!)rCC$7() \ 20 CW  a
Z C(7/Z’) ‘ 35 3. 4 points The probability that a certain tennis player will serve an ace is .65. What is the probability that she
will serve exactly 3 aces out of 4 serves? Pr(s acca) = 6069(6) 30"“?! “ .327? MATH230 Spring 2008 Name: Q ( 0
Quiz 5 Green Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. 3O 31 32 33 T 10:00 T 9:00 R9:00 R 11:00
‘Pr(r successes) = C(n, r) p’ (l — p)” 1. 4 points The probability that a certain tennis player will serve an ace is .25. What is the probability that she
will serve exactly 2 aces out of 5 serves? Pr(2qm)= C(S,2)(.z$)2(/~,25)3 = ,2637 Questions 2, 3: A box has 4 good oranges and 3 rotten ones. Two oranges are selected simultaneously and at
random. A random variable X is deﬁned to be the number of rotten oranges selected. 2. 2 oints What are the possible values of X?
P o, t, 2. 3. 4 points Find the density function of X. «emcam) _ J: ((7,1) 2!
divCW) : 13
l CC7,2.) 2" MATH230 Spring 2008 Name: [4471 Z 40
Quiz 5 Canary Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. 30 31 32 33 T 10:00 T 9:00 R9200 R 11:00
Pr(r successes) = C(n,r)p’ (1 — p)“ Questions 1, 2: A box has 6 good oranges and 5 rotten ones. Two oranges are selected simultaneously and at
random A random variable X is deﬁned to be the number of rotten oranges selected. 1. 2 points What are the possible values of X? 2. 4 points Find the density function of X. 3. 4 points The probability that a certain tennis player will serve an ace is .55. What is the probability that she
will serve exactly 2 aces out of 3 serves? Pf<LQc¢3) 1 C(3,z).(‘5$)"(1~,5$‘) ( ‘— «L'fO‘S’ L7, MATH230 Spring 2008 Name: K4 / 0
Quiz 5 Pink Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. ' 30 31 32 33 T 10:00 T 9:00 R 9:00 R 11:00
Pr(r successes) = C (n,r) p’ (1 — p)“ 1. 4 points The probability that a certain tennis player will serve an ace is .35. What is the probability that she
will serve exactly 1 ace out of 3 serves? Pr(lqce): ((3,1)(,as)'(/—.3>~)”: .HL/EL Questions 2, 3: A box has 7 good oranges and 4 rotten ones. Two oranges are selected simultaneously and at
random. A random variable X is deﬁned to be the number of rotten oranges selected. O/l/Z 2. 2 points What are the possible values of X? 3. 4 points Find the density ﬁmction of X. Z! I! 2% 55 ...
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 Spring '08
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