candy2tall candy2tall

01-12-2016
Mathematics

contestada

Suppose that a class contains 15 boys and 30 girls, and that 10 students are to be selected at random for a special assignment. Find the probability that exactly 3 boys will be selected.

Respuesta :

thatasian thatasian

01-12-2016

15C3 x 30C7 / 45C10 = 455 * 2035800 / 3190187286
926289000 / 3190187286 = 0.29035568
= about 29%

Answer Link

Otras preguntas

Which event in history is seen by many people as the beginning of the Great Depression?

Lee has a jar of 100 pennies. She adds groups of 10 pennies to the jar . She adds 5 groups. What numbers does she say?

How do you say the number 4.293? Also, write two other forms of this number.

There are 35 boys in sixth grade. The number of girls in the sixth grade is 42. Lonnie says that means the ratio of number of boys in the sixth grade to number

round to the nearest hundredth. 84.562

who can help me with quantitative observation examples

36/b-3=0 find the solution of this equation.

what integer does the square root of 75 lie between...please explain

A chunk of paraffin (wax) has a mass of 50.4 grams and a volume of 57.9 cm3. What is the density of paraffin?

the cube of x plus 5