Q: Cloud seeding is used to increase precipitation by dispersing substances (sil
ID: 3217234 • Letter: Q
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Q: Cloud seeding is used to increase precipitation by dispersing substances (silver iodide, dry ice, table salt) into the air that serve as cloud condensation. Simpson (1975, Technometric) reported the results on 26 seeded and 26 unseeded clouds in order of the amount of rainfall (in acre-feet), largest amount first. Here are 2 possible tests to study the question of whether cloud seeding work:
(Please answer parts a,b posted in the picture. Also please show how you found the answers)
1. Cloud seeding is used to increase precipitation by dispersing substances (silver iodide, dry ice, table salt) into the air that serve as cloud condensation. Simpson (1975, Technometrics) reported the results on 26 seeded and 26 unseeded clouds in order of the amount of rainfall (in acre-feet), largest amount first. Here are 2 possible tests to study the question of whether cloud seeding work: Ch 6.3.2 Paired t-Test of H (Seeded -Unseeded) T-Test of Ho: (Seeded unseeded)- o against HA: Seeded Unseeded) 0 t-Statistics 3.64 with 25 df P-Value 0.0006 Ch 6.3.3 2-SampzTest of u(Seeded) -u (Unseeded) How pulseeded)- u(Unseeded) o against HA: u(seeded) ulunseeded) o z-Statistics 1.9953 unseeded 277.1 seeded P-Value 0.0230 a. Which of these 2 tests is appropriate for these data? Explain. b. Using the test you selected in part (a) and a 0.01, state your conclusion in context of the problem.Explanation / Answer
a) 2nd test (ch.6.3.3) is appropriate test to the given data
b) In the 2nd test, P -value = 0.0230 which is > 0.01, we accept H0
Thus, we conclude that There is average rain fall from seeded cloud is not higher than average rain fall from unseeded clounds
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