The probability that an earthquake will damage a certain structure during a year is 0.015. The probability that a hurricane will damage the same structure during a year is 0.025. If the probability that both an earthquake and a hurricane will damage the structure during a year is 0.0073, what is the probability that next year the structure will not be damaged by a hurricane or an earthquake?

Histogram Divide data o Equal width o No overlapping Bar chart o Skew pulls direction of mean o Symmetric Numeric Summary Center, spread, and location Greek letters for population Roman letters for statistics 1. Mean µ= population mean x bar= sanple mean o ∑ Xi all over n= sample mean k=0 2. Mean vs. Median a. Mean used the most b. N is small when outliers occur c. Use median, mean is too affected Spread 1. Range (MaxMin) a. Sensitive to outliers 2. IQR a. Not sensitive to outliers Variability XiX bar