Probability

Suppose that in a large population of students, the mean amount of sleep the previous night was μ = 7.1 hours and the standard deviation was σ = 1.7 hours. Consider randomly selected samples of n = 300 students.

1. Use the Empirical Rule to find values that fill in the blanks at the end of the following sentence. (Round your answers to three decimal places.) For 68% of all randomly selected samples of n = 300 students, the mean amount of sleep the previous night will be between
2. Use the Empirical Rule to fill in the blanks at the end of the following sentence. (Round your answers to three decimal places.) For 95% of all randomly selected samples of n = 300 students, the mean amount of sleep will be between