ANSWERĪll questions are answered and carefully explained. (3) In this case, you select from 16 non-red marbles so the probability is THEREFORE, the final probability in this case is P = 0.3831 (approx. The numerator in the formula is the number of all possible 5-marble subsets, containing EXACTLY 2 red marbles. It is so called "the set of all possible events" in this problem. In other words, it is the number of all possible 5-marble subsets of the given set of 26 marbles. The denominator is the number of all combinations of 26 marbles taken 5 at a time. (2) In this case, the probability is THIS FRACTION (1) You INCORRECTLY calculated the answer to this question. This to be similar to the complement of the first question, but that does not give th right answer, (3) What is the probability that none of the marbles are red? I know that the "exactly" part is important I just don't know what to do in that case. I assumed it just was (10/36)*(9/35) but that is not the case. (2) What is the probability that exactly two of the marbles are red? (1) What is the probability that all the marbles are red? You draw 5 marbles out at random, without replacement. You can put this solution on YOUR website!Ī bag contains 10 red marbles, 8 white marbles, and 8 blue marbles. This to be similar to the complement of the first question, but that does not give th right answer, I tried 1-((10/36)*(9/35)*(8/34)*(7/33)*(6/32)) which is incorrect. The probability of picking no red marbles is What is the probability that none of the marbles are red? The probability that exactly two of the marbles are red is What is the probability that exactly two of the marbles are red? The probability that all the marbles are red is What is the probability that all the marbles are red? Question 1183213: A bag contains 10 red marbles, 8 white marbles, and 8 blue marbles. Click here to see ALL problems on Probability-and-statistics.Thus, the discounted rate for the sodas is $.50/1 soda. Since our unit is $, we'll convert #1/2# to dollars. To find out, we'll set up two rates, because we have 2 different units, dollars and number of sodas: Since we only need 15 sodas, we're wondering how much each soda costs at the discounted rate. The local pizza place offers a group discount on soda purchases: $10 for 20 sodas. Let's say we'd like to buy a soda for each student in the classroom. Thus, there are 2 boys in the room for every 1 girl. If we simplify the ratio, we see that the ratio of boys to girls is 2:1, since #10 -: 5 = 2# and #5 -: 5 = 1#. This means the ratio of boys to girls is 10:5. The School District of Palm Beach County announces the schedule of graduation ceremonies for the High School. The difference is that a rate is a comparison of two numbers with different units, whereas a ratio compares two numbers with the same unit.įor example, in a room full of students, there are 10 boys and 5 girls. Graduation Ceremony Dates Announced for 2023. Both rates and ratios are a comparison of two numbers.Ī rate is simply a specific type of ratio.
0 Comments
Leave a Reply. |