Instructions: Read the following scenarios and answer the questions. "Bacteria in a culture can live for an average of two hours with a standard deviation of 15 minutes. How long can we expect at least 75% of the bacteria to live?" 1. What is the mean? 2 hours = 120 minutes (Convert the number of hours to minutes.) 2. What is the standard deviation? s = minutes 3. According to Chebyshev's Theorem, how many standard deviations contain at least 75% of the data? k = (Click to view hint) 4. We can expect the at least 75% of the bacteria to live between and minutes. (Enter - ks in the first blank and a + ks in the second blank.)