Math

Question 1 : We would like to test 3 different treatments on a particu-
lar type of plant. A worker at the local greenhouse will allow us to use 3
among 10 plants. Note: Each treatment will be used on one and only one
plant.

a) In how many different ways can we assign the plants to the treatments?

b) Suppose that 2 of the ten plants are older than the other 8 plants. Assuming that we are choosing the plants randomly, what is the probability that at least one of the two older plants will be chosen among the three selected
plants?


There are 10C3 10 choose 3 ways to select a plant, and 3 solutions we could use on a plant. You should be able to calculate this.
The easier way to calculate b) is to observe that there are
8C3 ways to select only younger plants out of 10C3 total ways to select plants. Thus the prob of only younger plants is
(8C3)/(10C3) and the prob that at least on plant is an older one is
1 - (8C3)/(10C3)

  1. 👍 0
  2. 👎 0
  3. 👁 90

Respond to this Question

First Name

Your Response

Similar Questions

  1. statistics

    n=15 and there are 3 groups These data are analyzed by an ANOVA, and the resutls are reported in the following summary table. fill in all missing values in the table. * All that is given in the table is the MS(mean square) within

    asked by Helen on April 2, 2008
  2. Math

    We would like to test 3 different treatments on a particular type of plant. A worker at the local greenhouse will allow us to use 3 amoung 10 plants. *Note: Each treatment will be used on one and only one plant.* a) In how many

    asked by Lindz on September 27, 2006
  3. statistics for behavioral sciences

    In a one- to two-page Microsoft Word document, for each hypothesis listed indicate: Whether the appropriate analysis would be a one-tailed test or a two-tailed test. A type I and type II error, given the context of the hypothesis.

    asked by troy on February 21, 2012
  4. statistics for behavioral sciences

    In a one- to two-page Microsoft Word document, for each hypothesis listed indicate: Whether the appropriate analysis would be a one-tailed test or a two-tailed test. A type I and type II error, given the context of the hypothesis.

    asked by troy on February 21, 2012
  5. Math Algebra

    Question:: You are about to take a test that contains questions of type A worth 4 point and of type B worth 7 points. You must andwer at least 5 of type A and 3 of type B, but time restricts answering more than 10 of either type.

    asked by Dulcina on September 24, 2013
  6. statistics

    A researcher reports an F-ratio with df = 2, 36 from an independent-measures research study. Based on the df values, how many treatments were compared in the study and what was the total number of subjects participating in the

    asked by Robbie on November 14, 2012
  7. Chemistry

    I did a melting point test for menthol and the question is asking what type of compound is demonstrated and the answer should include inter molecular forces I also need to explain this same question for a solubility in water test

    asked by Anonymous on October 27, 2012
  8. business statistics

    1-A randomized block design ANOVA has five treatments and four blocks. The computed test statistic (value of F) is 4.35. With a 0.05 significance level, the appropriate table value and conclusion will be? 2-A randomized block

    asked by Lesliam on August 11, 2009
  9. Psychology

    Summarize the effects of one type of sexual dysfunction that can affect both men and women. What are some factors that may cause this type of dysfunction? What treatments may help individuals who experience this type of

    asked by Brittney on April 16, 2009
  10. Algebra

    you are about to take a test that contain questions of type A worth 4 points and of type B worth 7 points. You must answer at least 5 of type A and 3 of type B, but time restricts answering more than 10 of either type. In total,

    asked by CJ on November 12, 2007

More Similar Questions