A sleep researcher wants to determine if the sleep onset latency (SOL) of narcolepsy patients is different from 10 minutes, which is an average SOL of healthy people across their multiple sleep latency test naps. The researcher randomly recruits 48 narcolepsy patients and measures their SOL using multiple sleep latency test naps and finds a mean of 8 minutes with a standard deviation of 4 minutes. Which statistical test should she use? What are the null and alternative hypotheses for this test