92% ew Go Tools Window Help 19 (1 page) ? Q Search 15. Referring to the grade ta
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92% ew Go Tools Window Help 19 (1 page) ? Q Search 15. Referring to the grade table from question #7, what is the probability that a student chosen at random did NOT earn a C? 16. Refer ing to the credit card table from, question #8, what is the probability that a person chosen at random has at least one credit card? 17. A six-sided die is rolled twice. What is the probability of showing a 6 on both rolls? 18. A fair coin is flipped twice. What is the probability of showing heads on both flips? 19. A die is rolled twice. What is the probability of showing a 5 on the first roll and an even mumber on the second roll? 20. Suppose that 21% of people own dogs. If you pick two people at random, what is the 21. Suppose a jar contains 17 red marbles and 32 blue marbles. If you reach in the jar and 22. Suppose you write each letter of the alphabet on a different slip of paper and put the slips 23. Bert and Ernie have one well-shuffled standard deck of 52 cards, from which they each probability that they both own a dog? pull out 2 marbles at random, find the probability that both are red. into a hat. If you pull out two slips at random, find the probability that both are vowels. draw one card. Compute the probability that: a. Bert and Ernie both draw an Ace. b. Bert draws an Ace but Emie does not. c. neither Bert nor Ernie draws an Ace. d. Bert and Ernie both draw a heart. e. Bert gets a card that is not a Jack and Emie draws a card that is not a heart. acBooExplanation / Answer
Answer 19
Favorable outcomes of 5 on first roll and even number on second roll are (5,2), (5,4) and (5,6)
so, we have 3 favorable outcomes and total outcome = 6*6 = 36
so, required probability = (Favorable outcome)/(total outcome) = 3/36 or 1/12 or 0.0833
Probability of getting 5 on first roll and even number on second role is 1/12 or 0.0833
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