Monday

December 22, 2014

December 22, 2014

Posted by **Arun** on Thursday, March 1, 2012 at 12:30am.

a.0.054,b.0.018,c.0.036,d.0.012

- Probability and statistics -
**MathMate**, Thursday, March 1, 2012 at 8:55amThink of the expansion of the polynomial

(A+B+C)^3 where A=below, B=averave, C=above, and A+B+C=1.

1 is below average = A (0.2)

2 are above average = C (0.3)

term=AC^2

The coefficient of AC^2 is 3, i.e. 3AC^2.

The probability is therefore

3*0.2*0.3^2=0.054

**Answer this Question**

**Related Questions**

Probability and statistics - 5. The probabilities that the lifetime of a ...

Maths - In a class of 75 students,15 are above average,45 are average and the ...

COLLEGE MATH - In 2003, the probability that a randomly chosen bag of cement ...

more statistics - The percent of fat calories that a person in America consumes ...

MATH - (4 pts) The score on an exam from a certain MAT 112 class, X, is normally...

Geometry - I have to do this web quest table and i just want to make sure that i...

stat - Problem 2. THE PROBABILITY THAT A RANDOMLY CHOSEN SALES PROSPECT WILL ...

Binomial and Poisson distribution - A machine produces ribbon in which flaws ...

Statistics - An industrial engineer has found that the standard household light ...

STATS - The fracture strength of a certain type of manufactured glass is ...