P(A and B) cannot be 0.7. 4.101 Is the calcium intake adequate? In the population of young children eligible to participate in a study of whether or not their calcium intake is adequate, 52% are 5 to 10 years of age and 48% are 11 to 13 years of age. For those who are 5 to 10 years of age, 18% have inadequate calcium intake. For those who are 11 to 13 years of age, 57% have inadequate calcium intake. 18 (a) Use letters to define the events of interest in this exercise. (b) Convert the percents given to probabilities of the events you have defined. (c) Use a tree diagram similar to Figure 4.19 (page 272) to calculate the probability that a randomly selected child from this population has an inadequate intake of calcium.

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P(A and B) cannot be 0.7.
4.101 Is the calcium intake adequate? In the
population of young children eligible to participate
in a study of whether or not their calcium intake is
adequate, 52% are 5 to 10 years of age and 48% are
11 to 13 years of age. For those who are 5 to 10 years
of age, 18% have inadequate calcium intake. For those
who are 11 to 13 years of age, 57% have inadequate
calcium intake. 18
(a) Use letters to define the events of interest in this
exercise.
(b) Convert the percents given to probabilities of the
events you have defined.
(c) Use a tree diagram similar to Figure 4.19 (page 272)
to calculate the probability that a randomly selected
child from this population has an inadequate intake of
calcium.
Transcribed Image Text:P(A and B) cannot be 0.7. 4.101 Is the calcium intake adequate? In the population of young children eligible to participate in a study of whether or not their calcium intake is adequate, 52% are 5 to 10 years of age and 48% are 11 to 13 years of age. For those who are 5 to 10 years of age, 18% have inadequate calcium intake. For those who are 11 to 13 years of age, 57% have inadequate calcium intake. 18 (a) Use letters to define the events of interest in this exercise. (b) Convert the percents given to probabilities of the events you have defined. (c) Use a tree diagram similar to Figure 4.19 (page 272) to calculate the probability that a randomly selected child from this population has an inadequate intake of calcium.
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