Maurice Tutor

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Teaching Since: May 2017
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 02 Nov 2017 My Price 10.00

Jurnal of Biogeography

Mongolian desert ants. Refer to the Journal of Biogeography (December 2003) study of ants in Mongolia (central Asia), presented in Exercise 2.68 (p. 59). Recall that botanists placed seed baits at 11 study sites and observed the number of ant species attracted to each site. A portion of the data (saved in the GOBIANTS file) is provided in the next table (p. 380). Do these data indicate that the average number of ant species at Mongolian desert sites differs from 5? Conduct the appropriate test at a = .05. Are the conditions required for a valid test satisfied?

Exercise 2.68

Mongolian desert ants. The Journal of Biogeography (Dec. 2003) published an article on the first comprehensive study of ants in Mongolia (Central Asia). Botanists placed seed baits at 11 study sites and observed the ant species attracted to each site. Some of the data recorded at each study site are provided in the table on the next page and saved in the GOBIANTS file.

a. Find the mean, median, and mode for the number of ant species discovered at the 11 sites. Interpret each of these values.

b. Which measure of central tendency would you recommend to describe the center of the number-of-ant-species distribution? Explain.

c. Find the mean, median, and mode for the percentage of total plant cover at the five Dry Steppe sites only.

d. Find the mean, median, and mode for the percentage of total plant cover at the six Gobi Desert sites only.

e. On the basis of the results of parts c and d, does the center of the distribution for total plant cover percentage appear to be different at the two regions?

Answers

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Status NEW Posted 02 Nov 2017 07:11 PM My Price 10.00

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