Probabilities

posted by .

1.) two marbles are drawn without replacement from a bowl containing seven red, four blue, and nine yellow marbles. what is the probability that at least one is red?

2.)a card is drawn from a standard deck of 52 cards. what is the probability that the card is neither a four or a five?

3.)At Studymore University, 46% of students are female and 13% of the female students are psychology majors. 9% of all students are psychology majors. a student is selected at random. what is the probability that the person selected is a female psychology major?

4.)you supervise 12 nurses. in how many ways can you choose four nurses to have the weekend off? what is the probability that four chosen individuals will have the weekend off?

  • Probabilities -

    We do not do your work for you. Once you have answered your questions, we will be happy to give you feedback on your work. Although it might require more time and effort, you will learn more if you do your own work. Isn't that why you go to school?

    However, I will start you out with the first problem.

    1. You are looking for probability of either one red or two reds.

    One red = 7/20 * 13/19

    Two reds = 7/20 * 6/19

    Either-or probability is founds by adding the individual probabilities.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Probability/Statistics

    1)Two marbles are chosen at random from a bag containing 3 blue and 2 red marbles. The relative-frequency histogram shows the distribution of the number of red marbles chosen. Find P(0 red). (the gragh shows 3/10 for 0 red, 3/5 for …
  2. Probabilities

    A jar contains 2 red marbles, 3 green marbles, 4 blue marbles, and 5 yellow marbles. Two marbles are drawn in succession, without replacement. The probability that neither is yellow?
  3. Math-Probability

    Hello, I'm trying to figure out this probability problem. Can anyone help walk me through?
  4. math

    1.A box contains four red marbles, seven white marbles, and five blue marbles. If one marble is drawn at random, find the probability for each of the following: a.A blue marble is drawn: ______ b.A red or blue marble is drawn: _____ …
  5. Math

    A box contains four red marbles, seven white marbles, and five blue marbles. If two marbles are drawn one at a time, find the probability that both marbles are white if the draws are made as follows: (a) With replacement ____________ …
  6. Probabilities

    1.) two marbles are drawn without replacement from a bowl containing seven red, four blue, and nine yellow marbles. what is the probability that at least one is red?
  7. Statistics

    1.In a jar, suppose there are 3 blue marbles, 2 yellow marbles and one red marble. c. Suppose that 3 marbles are drawn from the jar without replacement. What is the probability that the 3 marbles are all different colors?
  8. math

    A standard deck of cards has had all the face cards (Jacks, queens, and kings) removed so that only the ace through ten of each suit remains. A game is played in which two cards are drawn (without replacement) from this deck and a …
  9. Statistics

    A bag of marbles has 5 Green, 4 Red, and 3 yellow marbles. Three marbles are randomly drawn from the bag, without replacement: What is the probability that at least one of the three marbles drawn are red?
  10. Probabilit

    Three marbles are drawn without replacement from an urn containing 4 red marbles, five what marbles, and two blue marbles. Determine the probability that None is red

More Similar Questions