According to the Merck Veterinary Manual, the average resting heart rate for a c

Question

According to the Merck Veterinary Manual, the average resting heart rate for a certain type of sheep dog is 115 beats per minute (bpm). A Montana farmer notices his aging sheep dog has been acting more lethargic than usual and wonders if her heart rate is slowing. He measures her heart rate on 15 occasions and finds a sample mean heart rate of 118.2 bpm.

A. H0:=115,   Ha:<115
B. H0:=115,   Ha:115
C. H0:x¯=115,   Ha:x¯>115
D. H0:=115,   Ha:>115
E. H0:=118.2,   Ha:<118.2
F. H0:x¯=118.2,   Ha:x¯118.2

Explanation / Answer

here as we are checking that herat beat has fallen below 115 bpm and therefore correct option is :

A. H0:=115,   Ha:<115

please revert for any clarification or if there is any sub part of this,

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