A student is selected at random. Find the probability the student is a fourth-gr

Question

A student is selected at random. Find the probability the student is a fourth-grade student. fourth-grade student scoring above grade level. fifth-grade student scoring at or above grade level. fourth-grade student when the student is selected from those scoring below grade level. student scoring below grade level, given the student is in the fourth grade. A creative writing class has 32 students, of whom 16 are seniors, 12 are juniors, and 4 are sophomores. Nine of the seniors, 5 of the juniors, and 2 of the sophomores are journalism majors. A student is selected at random. Find the probability that the student is a journalism major, knowing the student is a junior. not a senior, given that the student is a journal. ism major.

Explanation / Answer

1) a) Probability of 4th grader = 678/1205 = 56.26%

b) Probability of 4th grader scoring above grade level = 216/1205 = 17.92

c) Probability of 5th grader scoring at or above grade level = (324+98)/1205 = 35.02%

d) Probability = 120/225 = 53.33%

e) Probability = 120/678 = 17.69%

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