contestada

38. In a certain school, 45% of the students are boys. 80% of the boys have brown hair while 50% of those with brown hair
are girls. What is the probability that a randomly selected girl does NOT have brown hair?
A) .19
B) .36
C) 55
D) .35
E) none of the above are correct

Respuesta :

francocanacari

The probability that a randomly selected girl does not have brown hair is 34.54%.

Given that in a certain school, 45% of the students are boys, and 80% of the boys have brown hair while 50% of those with brown hair are girls, to determine what is the probability that a randomly selected girl does NOT have brown hair, the following calculation must be performed:

  • 45 x 0.80 = 36% of the school are brown hair boys
  • 36% of the school are brown hair girls
  • 55 - 36 =
  • 55 = 100
  • 19 = X
  • 19 x 100/55 = X
  • 1900/55 = X
  • 34.54 = X

Therefore, the probability that a randomly selected girl does not have brown hair is 34.54%.

Learn more about maths in https://brainly.com/question/25862092

Otras preguntas