(2 points) For each statement, select the correct null hypothesis, Ho, and alternative hypothesis, Ha, in symbolic form. (a) A certain type of hummingbird is known to have an average weight of 4.55 grams. A researcher wonders if hummingbirds (of this same type) living in the Grand Canyon differ in weight from the population as a whole. The researcher finds a sample of 30 such hummingbirds from the Grand Canyon and calculates their average weight to be 3.75 grams. O A. Ho : x = 3.75, Ha : x > 3.75 O B. Ho : H = 4.55, Ha : H 69 O C. Ho : * = 69, Ha : x > 69 O D. Ho : x = 71, Ha : x 69, Ha : H 115 O B. Ho : # = 115, Ha : p # 115 O C. Ho : x = 118.2, Ha : x # 118.2 O D. Ho : # = 115, Ha : H 115