There are 80 sixth graders, 90 seventh graders, and 70 eighth graders at your school. Every student gets entered in a raffle. What is the probability that a seventh-grade student will win the raffle?
the answer is a 42.857% chance which is 3/8
I'm glad to help, I hope this was helpful
The probability that a seventh-grade student will win the raffle is 3/8.
"Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one".
For the given situation,
Number of students in sixth grade = 80
Number of students in seventh grade = 90
Number of students in eighth grade = 70
Total number of students in school = 240
The event is the the probability that a seventh-grade student will win the raffle
Thus, the probability that a seventh-grade student will win the raffle\(P(e)=\frac{90}{120}\)
⇒\(P(e)=\frac{3}{8}\)
Hence we can conclude that the probability that a seventh-grade student will win the raffle is 3/8.
Learn more about probability here
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