1. Suppose the mean life span of a randomly selected Chihuahua dog is normally distributed with a mean of 13 years and a standard deviation of 1.5 years. a) What is the probability that a randomly selected Chihuahua will live to be 14 years or older? b) What is the probability that a randomly selected sample of 25 Chihuahuas will have a mean life span of 14 years or more? What is the probability that a randomly selected sample of 25 Chihuahuas will have a mean c) life span between 12.5 and 14 years?

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