Species Identification-According to the Wall Street Journal
Species Identification
According to the Wall Street Journal (1/22/02, p. B1,4.), "scientists have identified most of the higher-order animals and plants, but the vast majority of bacteria, fungi and 'creepy crawlers' have yet to be discovered. A sample of those life forms:"
Are there differences in the proportions that are identified as the article suggests?
|
Group |
Identified |
Unidentified |
Total |
|
Vertebrates & close relatives |
45,000 |
5,000 |
50,000 |
|
Plants |
50,000 |
2,70,000 |
3,20,000 |
|
Others |
1,15,000 |
1,35,000 |
2,50,000 |
|
Mollusks |
70,000 |
1,30,000 |
2,00,000 |
|
Crustaceans |
40,000 |
1,10,000 |
1,50,000 |
|
Protozoans |
40,000 |
1,60,000 |
2,00,000 |
|
Insects |
9,50,000 |
70,50,000 |
80,00,000 |
|
Algae |
40,000 |
3,60,000 |
4,00,000 |
|
Arachnids |
75,000 |
6,75,000 |
7,50,000 |
|
Nematodes |
25,000 |
3,75,000 |
4,00,000 |
|
Fungi |
72,000 |
14,28,000 |
15,00,000 |
|
Viruses |
4,000 |
3,96,000 |
4,00,000 |
|
Bacteria |
4,000 |
9,96,000 |
10,00,000 |
|
Total |
15,30,000 |
1,20,90,000 |
1,36,20,000 |
|
Expected identification |
|||
|
Group |
Identified |
Unidentified |
Total |
|
Vertebrates & close relatives |
5,617 |
44,383 |
50,000 |
|
Plants |
35,947 |
2,84,053 |
3,20,000 |
|
Others |
28,084 |
2,21,916 |
2,50,000 |
|
Mollusks |
22,467 |
1,77,533 |
2,00,000 |
|
Crustaceans |
16,850 |
1,33,150 |
1,50,000 |
|
Protozoans |
22,467 |
1,77,533 |
2,00,000 |
|
Insects |
8,98,678 |
71,01,322 |
80,00,000 |
|
Algae |
44,934 |
3,55,066 |
4,00,000 |
|
Arachnids |
84,251 |
6,65,749 |
7,50,000 |
|
Nematodes |
44,934 |
3,55,066 |
4,00,000 |
|
Fungi |
1,68,502 |
13,31,498 |
15,00,000 |
|
Viruses |
44,934 |
3,55,066 |
4,00,000 |
|
Bacteria |
1,12,335 |
8,87,665 |
10,00,000 |
|
Total |
15,30,000 |
1,20,90,000 |
1,36,20,000 |
TRADITIONAL VS NONTRADITIONAL
The overall averages for students in two sections of an MVNU Business course are provided below. One section is for traditional students and the other is for students in the AGS program. The Business Department wants to know if there is any difference between the results of the two classes. (Actual data from a real course.)
|
Traditional |
AGS |
|
96.9 |
97.5 |
|
94.0 |
95.5 |
|
93.8 |
91.2 |
|
93.0 |
89.6 |
|
92.2 |
89.6 |
|
91.8 |
88.5 |
|
90.4 |
88.0 |
|
89.7 |
85.0 |
|
89.2 |
83.8 |
|
89.2 |
83.6 |
|
87.1 |
83.3 |
|
86.8 |
75.1 |
|
86.0 |
73.2 |
|
85.5 |
69.9 |
|
85.2 |
67.1 |
|
83.1 |
61.4 |
|
82.8 |
60.8 |
|
82.6 |
42.3 |
|
82.6 |
|
|
81.0 |
|
|
80.9 |
|
|
78.8 |
|
|
77.8 |
|
|
75.1 |
|
|
73.3 |
|
|
72.6 |
|
|
72.4 |
|
|
72.4 |
|
|
68.5 |
|
|
63.1 |
|
|
55.6 |
|
|
43.7 |
|
|
39.9 |
|
|
36.5 |
|
|
25.6 |
A real estate company is trying to determine how strongly a person's annual income dictates their home's value in a certain city. They ran a regression analysis and the results showed a coefficient of 2.86 and an intercept of $11,451. (A) What would the formula be for that trendline? and (B) If a person's income was $85,000, what do you think their home would probably be worth? (assume they are not outliers and they fit the trendline fairly well
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Solution: Species Identification-According to the Wall Street Journal