At a certain middle school, there are 200 5th graders, 220 6th graders, 180 7th graders, and 150 8th graders. The Dean of Students chooses a

Question

At a certain middle school, there are 200 5th graders, 220 6th graders, 180 7th graders, and 150 8th graders. The Dean of Students chooses a scholar at random to help run Community Circle. What is the probability that a 7th grader is chosen?

in progress 0
Mít Mít 4 years 2021-09-02T18:31:20+00:00 1 Answers 7 views 0

Answers ( )

  1. minhkhoi
    0
    2021-09-02T18:33:06+00:00
    Reply

    Answer:

    6/25

    Step-by-step explanation:

    Probability calculates the likelihood of an event occurring. The likelihood of the event occurring lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.

    For example, the probability that it would rain on Friday is between o and 1. If it rains, a value of one ids attached to the event. If it doesn’t a value of zero is attached to the event.

    probability that a 7th grader is chosen = total number of 7th graders / total number of students

    total number of 7th graders = 180

    total number of students = 200 + 220 + 180 + 150 = 750

    180 / 750

    To transform to the simplest form. divide both the numerator and the denominator by 30

    6 / 25

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )