D Question 1 2 pts What type of study is this? Observational study Experiment D Question 2 2 pts What is the goal of statistical inference for this study? O estimate a population mean with a confidence interval estimate a population proportion with a confidence interval testing a claim about a population mean with a hypothesis test @ testing a claim about a population proportion with a hypothesis testPrompt Here is the research question for this lab. Based on a recent study, roughly 80% of college students in the U.S. own a smartphone. Is the proportion of smartphone owners lower at this university? Work through the questions below to identify the information you will need to answer this question. Variables . Math: Math SAT score . Verbal: Verbal SAT score . Credits: Number of credits the student is registered for . Year: Year in college (1=Freshman, 2=Sophomore, 3=Junior, 4=Senior) . Exercise: Time (in minutes) spent exercising in a typical day . Sleep: Time (in hours) spent sleeping in a typical day . Veg: Are you a vegetarian (yes, no, some) . Cell: Do you own a smart phone (yes, no)