1. According to a recent survey, Americans get a mean of 7 hours of sleep per night. A random sample of 50 students at West Virginia University revealed that the mean number of hours slept last night was 6 hours and 48 minutes (6.8 hours). The standard deviation of the sample was 0.9 hours. Is it reasonable to conclude that students at West Virginia sleep less than the typical American? E: 7,n = 50,0 :09 Step 1: Null and Alternate Hypothesis H02y27,Ha:,u la Frinnl r-cminn 7 ' 7\" nl: _ 1 EAL-x