1. Assume you observe a sample of n = 200 hospitals with a more or less bell-shaped distribution with a sample mean of = 35 heart attacks per month and a standard deviation s = 6. Apply the Empirical Rule to this case. 2. The height of plants in a certain garden are normally distributed with a mean of 22.2 inches and a standard deviation of 3.6 inches. Use the Empirical Rule to estimate what percentage of plants are less than 18.6 inches tall. 3. The height of plants in a certain garden are normally distributed with a mean of 37 inches and a standard deviation of 2.8 inches. Use the Empirical Rule to estimate what percentage of plants are greater than 34.2 inches tall.