Weights of small 'fun size' snickers bars are known to be right skewed with a mean of 20 grams. Because the penalty of selling candy bars under their advertised weight is severe, the manufacturer calibrates the machine to make sure it produces candy bars that are over 20 grams. A quality control engineer wants to test if the mean weight is greater than 20 grams. Use this information to answer the following parts. Part 1: State the null and alternative hypotheses for this engineer's test. H0 : u = 20 Ha : u =(does not equal) 20 H0 : u > 20 Ha : u = 20 H0 : u = 20 Ha : u >20 H0 : u1 = u2 Ha : u1 =(does not equal) u2 H0 : ud = 0 Ha : ud (does not equal) 0