Question 13 This Test: 39 pts possible [:03 Submit Test Use the probability distribution to complete parts (a) and (b) below The number of defects per 1000 machine parts inspected Detects 0 1 2 3 4 5 I3 Probability 0263 0.303 0.248 0.135 0.035 0.010 (3) 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 . (Round to one decimal place as needed.) (b) interpret the results. The mean is . so the average batch of 1000 machine parts has The standard deviation is . so the typical number of defects in a batch oi 1000 1 (Round to one decimal place as needed.) StatCrunch m