1) Basic Computation: Empirical Rule. What percentage of the area under the normal curve lies? a) To the left of u? b) Between u - 20 and u + 20 c) To the right of u + 30 2) The incubation time for Rhode Island Red chicks is normally distributed with a mean of 21 days and standard deviation of approximately 1 day (based on information from World Book Encyclopedia). Use the Empirical Rule to answer the following questions. If 1000 eggs are being incubated, how many chicks do we expect will hatch? a) In 19 to 23 days? [b) In 20 to 22 days? c) In 21 day or less