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Although bats are not known for their eyesight, they are able to locate prey (mainly insects) by emitting high-pitched sounds and listening for echoes. A paper appearing in Animal Behaviour ("The Echolocation of Flying Insects by Bats" [1960]: 141-154) gave the following distances (in centimeters) at which a bat ?rst detected a nearby insect:

62 23 27 56 52 34 42 40 68 45 83

a. Compute the sample mean distance at which the bat ?rst detects an insect.

b. Compute the sample variance and standard deviation for this data set. Interpret these values.

Microeconomics, Economics

  • Category:- Microeconomics
  • Reference No.:- M91724354

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