Question

Principal Kelly reported the state test scores from some students at his school.
Score Number of students
11 4
12 5
26 6
66 5
X is the score that a randomly chosen student scored. Write the probability distribution of X in the table below.
Write each probability as a decimal.
X P(X)
11
12 0.25
26
66 0.25

Answer 1

X P(X)
11 0.20
12 0.25
26 0.30
66 0.25

(Counts 4, 5, 6, 5 out of 20 students → probabilities 4/20=0.2, 5/20=0.25, 6/20=0.3, 5/20=0.25.)