Approximately what percentage of insolation arriving at the top of the atmosphere is eventually absorbed by the ground?
A. 40%
B. 50%
C. 70%
D. 20%
Answer: B
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The main source of electromagnetic waves is vibrating
A. molecules. B. electric charges. C. atoms. D. energy fields.
What percent of Japan's population resides in the Tokkaido Corridor?
A) 75% B) 35% C) 55% D) 15% E) 65%
Making a local weather forecast requires
A) knowledge of current local weather conditions. B) knowledge of current regional weather conditions. C) knowledge of current local and regional weather conditions. D) a barometer.
We calculate BSS = 10 * (540.3 - 543.6)2 + 16 * (602.9 - 543.6)2 + 17 * (489.8 - 543.6)2 = 105578.2 WSS = (10 - 1) * 46.42 + (16 - 1) * 47.42 + (17 - 1) * 48.92 = 91337.4 F = (BSS / (k-1)) / (WSS / (n-k)) = (105578.2 / (3 - 1)) / (91337.4 / (43 - 3)) = 23.1 The critical F value is F.05,2,40 = 3.23. The observed value vastly exceeds this, so we clearly reject the null hypothesis and conclude that the means differ across the groups.
