The American Academy of Ophthalmology states that 10,000 years ago everyone on Earth had brown eyes. It is believed that blue eyes come from a genetic mutation. Brown eyes are less prone to develop certain medical conditions such as eye cancer, and Brown eyes remain the the most common color for people. According to Medical News Today the proportion of the world's population that has brown eyes is 0.75 (or 75%). sample is drawn from the population and a p-hat is calculated (number of people with brown eyes)/(total sample size). In order for p-hat to come from an approximately normal distribution, identify all of the conditions that need to be met to conclude the the distribution is approximately normal