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Mathematics, 06.05.2020 07:09 Queiao4088
A certain type of hummingbird is known to have an average weight of 4.55 grams. A researcher believes that 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.
A. H0:?<4.55, HA:?=4.55
B. H0:x=4.55, HA:x<4.55
C. H0:?=4.55, HA:??4.55
D. H0:?=3.75, HA:??3.75
E. H0:?=4.55, HA:?<4.55
F. H0:x=3.75, HA:x>3.75
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