James counts the hair colors of the 22 people in his class including himself. He finds that there are 4 people with blonde hair, 8 people with brown hair, and 10 people with black hair. What is the probability that a randomly chosen student in the class does not have red hair? Explain.
My answer is that the probability is 0 because there is no one in the class with red hair.
Is this the correct answer?
Yes.
8 4/3 = 8 8-8=0 0
No, your answer is not correct. The probability that a randomly chosen student does not have red hair can be calculated by first determining the total number of students who do not have red hair and then dividing it by the total number of students in the class.
In the given information, it is not mentioned whether anyone in the class has red hair. Therefore, to find the probability, we assume that no one in the class has red hair.
To calculate the probability, we first need to find the number of students who do not have red hair. Since the problem states that there are 22 people in total, we can subtract the number of people with red hair from this total.
So, since it is assumed that no one has red hair, the number of students who do not have red hair is equal to the total number of students in the class, which is 22.
Now, to calculate the probability, we divide the number of students who do not have red hair by the total number of students in the class:
Probability = Number of students who do not have red hair / Total number of students
Probability = 22 / 22 = 1
Therefore, the probability that a randomly chosen student in the class does not have red hair is 1, or 100%.
I disagree
It asked for the prob that a person does NOT have red hair.
There are no red-haired students, so the prob of a student picked to
have red hair = 0/22 = 0
So the prob(not read hair ) = 1 - 0 = 1