An important step in creating confidence intervals for proportions is to check whether the success/failure conditions have been met otherwise the interval created will not be valid (i.e. we should not have created that interval)! The following examples are estimating the proportion of vegetarians in the population. Determine whether or not the success/failure have been met. In a sample of 100 people surveyed, 10 were vegetarians. Choose... In a sample of 50 people surveyed, 4 were vegetarians. Choose... In a sample of 150 people surveyed, 6 were vegetarians. Choose... In a sample of 20 people surveyed, 3 were vegetarians. Choose