Question: i need help solving B How long until your dishwsher breaks? Let's look at the possible lifetimes of dishwashers. A dishwasher has a mean lifetime

i need help solving B

How long until your dishwsher breaks? Let's look at the possible lifetimes of dishwashers. A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.25 years. Assume the lifetime of a dishwasher is normally distributed. Round the probabilities to four decimal places. It is possible with rounding for a probability to be 0.0000. a) State the random variable. ry X = the lifetime of a randomly selected dishwasherv b) Find the probability that a randomly selected dishwasher has a lifetime of 9.75 years or more. 0.96 X

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