The Blacktop Speedway is a supplier of automotive parts. Included in stock are 6 speedometers that are correctly calibrated and two that are not. Three speedometers are randomly selected without replacement. Let the random variable z represent the number that are not correctly calibrated. Complete the probability distribution table. (Report probabilities accurate to 4 decimal places.) P(2) 2 Find the mean of this probability distribution. (Appropriate rounding rules apply.) mean = 3. 1,

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