Here is the distribution of average hours of sleep on weeknights for the 43 students in the sample. 15 - 10 - 5 8 10 11 12 Sleep The conditions are met for use of the T-model to represent the distribution of sample means. Check all of the options that are relevant to checking conditions for this scenario. the sample was randomly selected. The sample size was greater than 30. The variable is normally distributed in the population. O the variable is not heavily skewed in the sample