The Titanic was a British passenger liner that sank in the North Atlantic Ocean in 1912, after colliding with an iceberg during her maiden voyage from Southampton to New York City. The sinking caused more than 1,500 passengers and crew to die, making it one of the deadliest peacetime maritime disasters in modern history. The Titanic catastrophe is not only famous for the movie, but also it allows several types of statistical analyses, and is therefore a popular case study in statistics texts. One of these analyses focuses on the following question: who survived the sinking? "Women and children first" is a code of conduct dating from 1852, whereby the lives of women and children were to be saved first in a life-threatening situation, typically abandoning ship, when survival resources such as lifeboats were limited. But is it indeed true that women and children had the best perspectives to survive? This data set has the survival data for the passengers on the Titanic. Also, for each person, the data set indicates if they were an adult or child, their gender, and the class they were staying in. StatCrunch Data Set What type of data does this data set contain? O All quantitative data Both quantitative and categorical data O All categorical data What method of data collection has been used? Anecdote OExperiment O Prospective observational study O Retrospective observational study Do these data represent a sample of a population, or the population itself? O Population O Sample

There are several possible explanations for the existence of a statistical relationship between two variables. Which is not a common explanation? A. Common Cause B. Confounding factor C. Coincidence D. None of the above

You may need to use the appropriate appendix table or technology to answer this question. Fewer young people are driving. In year A, 62.9% of people under 20 years old who were eligible had a driver's license. Twenty years later in year B that percentage had dropped to 48.7%. Suppose these results are based on a random sample of 1,500 people under 20 years old who were eligible to have a driver's license in year A and again in year B.   (a) At 95% confidence, what is the margin of error of the number of eligible people under 20 years old who had a driver's license in year A? (Round your answer to four decimal places.)   At 95% confidence, what is the interval estimate of the number of eligible people under 20 years old who had a driver's license in year A? (Round your answers to four decimal places.) _________ to ______________   (b) At 95% confidence, what is the margin of error of the number of eligible people under 20 years old who had a driver's license in year B? (Round your…

2) A researcher suspects that there is a relationship between substance use and sexual activity among single college students.  What statistical analysis tests would you use for this?