(1 point) A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkillem She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 24 minutes. How large a sample should she take to estimate the mean time to within 2 minutes with 92% confidence? Sample Size 441.5