Monday

October 20, 2014

October 20, 2014

Posted by **Lindz** on Wednesday, September 27, 2006 at 12:02am.

*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?

Can i answer: by permutations... 10 by 9 by 8 = 720 ways?

I think I answered this question yesterday, but let's try it again. I may have gotten it wrong since I see each treatment is used only once.

There are 10 choose 3 ways to select 3 plants. Since there are 3 possible treatments that can be used, there are 3 choices for the first plant, 2 for the second and only 1 for the third.

This means the total ways is

3!*(10 choose 3) ways the plants can be chosen and the treatments applied.

We would use permutations for the applications and combinations for the way the plants are chosen.

10 choose 3 is 10!/[3!*7!]

3!*10!/[3!*7!]=10*9*8=720 would be sufficient for you answer.

**Answer this Question**

**Related Questions**

Math - Question 1 : We would like to test 3 different treatments on a particu- ...

Math - Ms. Hernandez has 17 tomato plants that she wants to plant in rows. She ...

main ideas - Scientists generally agree that Earth is getting warmer due to what...

math - Ms.Hernandez has 17 tomato plants that she wants to plant in rows.She ...

Biology - You are testing a hypothesis that population density of a particular ...

main idea - The main conclusion you can draw from this paragraph is that A. ...

Biology help please! - Okay for this i have to pick a hypothesis and prediction...

science help plzzz - Multiple Choice 1. Which of the following images shows a ...

check/bio!!!! - okay the question is as follows: Three plants are placed in 3 ...

science - A class is to perform an experiment to study the effects of various ...