On average, indoor cats live to 12 years old with a standard deviation of 2.3 years. Suppose that the distribution is normal. Let X = the age at death of a randomly selected indoor cat. Round answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( b. Find the probability that an indoor cat dies when it is between 8.2 and 10.4 years old. c. The middle 20% of indoor cats' age of death lies between what two numbers?

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