Use the probability distribution to complete parts (a) and (b) below The number of defects per 1000 machine parts inspected
Defects 0 1 2 3 4
Probability ,0.257,0.287,0.244,0.158,0.042,0.0
Find the mean variance and standard deviation of the probability distribution The mean is (Round to one decimal place as needed) The variance is (Round to one decimal place as needed) The standard deviation is II (Round to ono decimal place as needed)
