The Sky Ranch is a supplier of aircraft parts. Included in stock are 10 altimeters that are correctly calibrated and two that are not. Three altimeters are randomly selected without replacement. Let the random variable $\displaystyle {x}$ represent the number that are not correctly calibrated.

Complete the probability distribution table. (Report probabilities accurate to 4 decimal places.)

$\displaystyle {x}$	$\displaystyle {P}{\left({x}\right)}$
0
1
2
3

Find the mean of this probability distribution. (Appropriate rounding rules apply.)
mean =