Suppose you are a researcher in a h05pital. You are experimenting with a new tranquilizer. You collect data from a random sample of 13 patients. The period of effectiveness of the tranquilizer for each patient (in hours) is as follows: ' What is a point estimate for the population mean length of time. (Round answer to 2 decimal places) G What must be true in order to construct a confidence interval in this situation? Select an answer 0 Construct a 95% confidence interval for the population mean length of time. (Round the critical value to 3 decimal places. Round upper and lOWer bounds to 2 decimal places.)