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| Teaching Since: | May 2017 |
| Last Sign in: | 398 Weeks Ago, 5 Days Ago |
| Questions Answered: | 66690 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
4.55 ● 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 ap- pearing in Animal Behaviour (“The Echolocation of Fly- ing Insects by Bats” [1960]: 141–154) gave the following distances (in centimeters) at which a bat first 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 first detects an insect.
b. Compute the sample variance and standard deviation for this data set. Interpret these values.
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