In a packaging process, 50 samples were collected and inspected. each sample comprises of 4 parts. the following table summarizes the number of defectives found in these samples. x o 0 7 1 10 2 10 3 15 4 8 where x is the number of defectives and o is the number of observed frequency. test the following hypothesis test. use = 0: 05 . h0: the probability distribution is binomial distribution h1: the probability distribution is not binomial distribution