madnessrelic7853 madnessrelic7853
  • 01-07-2018
  • Mathematics
contestada

There are 5 chemistry, 6 physics, and 7 math teachers in a school. if 3 teachers are selected randomly, find the probability that at least one is a math teacher.

Respuesta :

itsai7376p74zuj
itsai7376p74zuj itsai7376p74zuj
  • 01-07-2018
77.2%

To find the probably and at least on you must find the probability of none and subtract from one.

The probability of none can be found like so:

(5+6 over 5+6+7)^3 = .228

1 - .228 = .772

Hope this helps!
Answer Link

Otras preguntas

Modern taxonomy begins with contributions from _____. Aristotle Darwin Linnaeus Plato
Which point has coordinates (3,4)
What is the value of r? What is the length of segment EF?
To burn 1 molecule of C5H12 to form CO2 and H2O (complete combustion), how many molecules of O2 are required?
How would you convert 0.91 repeating into a fraction?
what does homeostasis mean.
Milk that is 4% butterfat is mixed with milk that is 1% butterfat to obtain 18 gallons of milk that is 2% butterfat. how many gallons of each type of milk are n
-7x = -3/4x - 5 find the value of X
Is pencil lead a element compound, heterogeneous, mixture ,or solution?
Why did george washington read "the crisis" to his troops?