alexfvdsdfgfd4603 alexfvdsdfgfd4603
  • 24-05-2018
  • Mathematics
contestada

A shipment of thirteen smartphones contains three with cracked screens. if sold in a random order, what is the probability that the first ten sold have undamaged screens?

Respuesta :

CastleRook
CastleRook CastleRook
  • 06-06-2018
The probability of a screen being damaged is:
P(d)=3/13=0.23
Thus to get the probability that the first 10 sold were undamaged we use the binomial distribution formula:
P(x)=n!/((n-x)!x!)p^x(1-p)^(n-x)
from the question:
n=13, x=10, p=0.23
hence
P(x)=13!/((13-10)!10!)*0.23^(13-10)*(1-0.23)^(10)
simplifying the above we get:
P(x)=0.255


Answer Link

Otras preguntas

The same quartet has ___ this song at graduation for the past two years. Choose the form of the verb that best completes the sentence. A) sang B) sing C)
Which colors allowed the most electricity to be generated
plz help me with my hw
What is a technique that involves putting a healthy copy of gene into cells that have a defective copy of the same gene.
how is learning about chemical reactions "like stepping out onto the field for the game for the first time?"
Which number goes in the box to make this a true sentence? 65 × 32 = (65 × 30) + (65 × )
At a busy street corner, the probability is that one of every hundred jaywalkers will be hit. What is his probability of not being hit if he makes a round trip
Is a compass is an unmarked ruler?
how do you use a dichotomous key to discover the scientific name of an organism
Help Please I will give a brainliest to anyone who knows the answer and can explain it!