2. The null and alternate hypotheses are: Ho0 Hd>0 The following sample information shows the number of defective units produced on the day shift and the afternoon shift for a sample of four days last month. Day 1 2 3 Day shift 10 12 15 19 Afternoon shift 8 9 12 15 At the .05 significance level, can we conclude there are more defects produced on the afternoon shift?