had exactly 2 hits 14 Disease Cluster Neuroblastoma a rare

Last updated: 2/17/2023

had exactly 2 hits 14 Disease Cluster Neuroblastoma a rare form of cancer occurs in 11 children in a million so its probability is 0 000011 Four cases of neuroblastoma occurred in Oak Park Illinois which had 12 429 children a Assuming that neuroblastoma occurs as usual find the mean number of cases in groups of 12 429 children b Using the unrounded mean from part a find the probability that the number of neuroblas toma cases in a group of 12 429 children is 0 or 1 c What is the probability of more than one case of neuroblastoma d Does the cluster of four cases appear to be attributable to random chance Why or why not for 2969 billion mile