Question
Before 1918, approximately 55% of the wolves in the New Mexico and Arizona region were male, and 45% were female. However, cattle ranchers in this
Before 1918, approximately55%of the wolves in the New Mexico and Arizona region were male, and45%were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately70%of wolves in the region are male, and30%are female. Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced. (Round your answers to three decimal places.)
(a) Before 1918, in a random sample of10wolves spotted in the region, what is the probability that7or more were male?
What is the probability that7or more were female?
What is the probability that fewer than4were female?
(b) For the period from 1918 to the present, in a random sample of10wolves spotted in the region, what is the probability that7or more were male?
What is the probability that7or more were female?
What is the probability that fewer than4were female?
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Statistical Techniques in Business and Economics
Authors: Douglas A. Lind, William G Marchal
17th edition
1259666360, 978-1259666360
