A study by the Centers for Disease Control and Prevention (Use of Medication Prescribed for Emotional or Behavioral Difficulties Among Children Aged 6-17 Years in the United States, 2011-2012, by LaHeana Howie et al., NCHS Data Brief Number 148, April 2014) showed that 7.5% of children ages 6-17 used prescribed medication during the past six months for emotional or behavioral difficulties. For Exercises 35–40, the binomial experiment is to select four children ages 6-17 at random, and to find the probability that takes the following values, where X = the number of children using prescription medication for emotional or behavioral difficulties: