Mathematics, 23.03.2020 21:07, qxchung7310
Box I contains 4 red and 8 blue marbles while box II contains 5 red and 3 blue marbles. An unfair coin in tossed, whose probability of turning up heads is 40%. If the coin comes up heads box I is chosen and a random marble is chosen, otherwise if it is tails the marble is chosen from box II.
(a) Find the probability a red marble is chosen.
(b) If a red marble is chosen, what is the probability it came from box I?
(c) If a blue marble is chosen, what is the probability it came from box I?
Suppose after the first marble is chosen, the experiment is repeated. Assume the first marble is NOT put back into its box. The coin is flipped again and another marble is chosen from either box I or box II.
(d) What is the probability that the second marble has the same color as the first marble?
Answers: 1
Mathematics, 21.06.2019 18:40, miguel3maroghi
Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.
Answers: 3
Mathematics, 21.06.2019 20:00, stichgotrich7159
Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take
Answers: 1
Box I contains 4 red and 8 blue marbles while box II contains 5 red and 3 blue marbles. An unfair co...
Chemistry, 04.08.2019 04:30
English, 04.08.2019 04:30
Mathematics, 04.08.2019 04:30