The percent of people with lactose intolerance ranges from a low of 4% in Ireland to a high of 100% in countries several countries including South Korea and Malawi. A researcher in Ohio wanted to estimate the proportion of lactose intolerant adults in Ohio. He took a random sample of 150 adults in Ohio and found that 56 were lactose intolerant. Required:
Use these data to construct and interpret a 90% confidence interval about the proportion adults in Ohio who are lactose intolerant.