SurveyMonkey.com is a popular website for hosting online surveys and from time to time they will also create surveys based on a subject they are interested in answering questions about. Given the widespread adoption of dating sites and apps, they wanted to learn how people feel about them. It was found that out of 400 responses, 100 have used or are currently using online dating services. The average age of those that were using online dating services was 35 years old with a population standard deviation of 12 years.

Give an approximate 90% confidence interval for the average age of people using online dating services.

Answer rating: 100% (QA)

Solution Given that Sample size n ... View the full answer