Question

Dr. Palmer, a pediatrician, weighed all the children who recently visited her office.
Weight (lbs) Number of children
34 5
77 5
95 7
103 3
X is the weight that a randomly chosen child weighed. Write the probability distribution of X in the table below.
Write each probability as a decimal.
X P(X)
34
77
95 0.35
103 0.15

Answer 1

Total children = 5 + 5 + 7 + 3 = 20.

P(X = 34) = 5/20 = 0.25
P(X = 77) = 5/20 = 0.25
P(X = 95) = 7/20 = 0.35
P(X = 103) = 3/20 = 0.15