2 The average amount of time to perform a specific chemical

2. The average amount of time to perform a specific chemical experiment is 60 minutes with a standard deviation of 4 minutes. Use Chebyshev?s theorem to answer the following questions. a. At least what percentage of similar chemical experiments will take between 54 to 66 minutes? b. At least what percentage of similar chemical experiments will take between 52 to 68 minutes?

a) Answer : 55.55 %

b) Answer : 75 %