(a) [4 pts] State the null (Ho) and the alternative hypothesis (H.). Justify your answerPica is a children's disorder characterized by a craving for nonfood substances such as clay, plaster and paint. Anyone affected runs the risk of ingesting high levels of lead1 which can result in kidney damage and neurological dysfunction. Checking a child's blood lead level is a standard procedure for diagnosing the condition. Among children between the ages of 6 months and 5 years1 blood lead levels of 16.0 mg are considered "normal\". Recently, a random sample of 12 children enrolled in Molly's Mighty Bear Nursery had their blood lead levels checked. The resulting sample mean and sample standard deviation were 13.65 and EJJdlgnyde {microgram per deciliter of blood). Can it be concluded that children at this particular facility have a higher risk of Pica? Use a signicance level of o: = H.135