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May 2017, Week 3

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Subject:
FW: Hi, here's your DAT Question of the Day!
From:
Kemile A Jackson <[log in to unmask]>
Date:
Fri, 19 May 2017 15:47:16 +0000
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[DAT Question of the Day, Click Display Images To See]





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Predict Number of Lions



A researcher is attempting to predict the number of lions in an African habitat based on previous data. He has formed a regression equation which is: Y = 25 + 0.5X – 2ZX, where X is the number of years since the first population sample, and Z is the death rate of the lions. If it has been 10 years, and the death rate is 1 lion per year, what is the predicted number of lions in the habitat?



A. 10.



B. 12.



C. 16.



D. 18.



E. 20.



To see the solution and images, visit the following link:

http://datquestionoftheday.com/math/predict-number-of-lions/<http://datquestionoftheday.us4.list-manage.com/track/click?u=d3318065969b7c08ead5d4c4d&id=24eb504fb1&e=61d7ba7392>

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