Use a = 0.01. There is insufficient vevidence to indicate that the true mean rainfall is greater than 26.0 acre-feet at a = 0.01. (b) Compute the power of the test if the true mean rainfall is 28.0 acre-feet. i 0.0 Round your answer to one decimal place (e.g.

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Please use the accompanying Excel data set
or accompanying Text file data set when
completing the following exercise.
Cloud seeding has been studied for many
decades as a weather modification
procedure (for an interesting study of this
subject, see the article in Technometrics, "A
Bayesian Analysis of a Multiplicative
Treatment Effect in Weather Modification",
Vol. 17, pp. 161-166). The rainfall in acre-
feet from 20 clouds that were selected at
random and seeded with silver nitrate
follows:
19.0, 31.7, 20.8, 28.1, 23.3,
19.8, 32.8, 24.4, 22.2, 28.9,
32.9, 28.1, 26.0, 25.7, 27.9,
22.8, 30.2, 35.8, 27.7, 32.6
(a) Can you support a claim that mean rainfall
from seeded clouds exceeds 26.0 acre-feet?
Use a = 0.01.
There is insufficient
vevidence to
indicate that the true mean rainfall is greater
than 26.0 acre-feet at a = 0.01.
(b) Compute the power of the test if the true
mean rainfall is 28.0 acre-feet.
Transcribed Image Text:Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. Cloud seeding has been studied for many decades as a weather modification procedure (for an interesting study of this subject, see the article in Technometrics, "A Bayesian Analysis of a Multiplicative Treatment Effect in Weather Modification", Vol. 17, pp. 161-166). The rainfall in acre- feet from 20 clouds that were selected at random and seeded with silver nitrate follows: 19.0, 31.7, 20.8, 28.1, 23.3, 19.8, 32.8, 24.4, 22.2, 28.9, 32.9, 28.1, 26.0, 25.7, 27.9, 22.8, 30.2, 35.8, 27.7, 32.6 (a) Can you support a claim that mean rainfall from seeded clouds exceeds 26.0 acre-feet? Use a = 0.01. There is insufficient vevidence to indicate that the true mean rainfall is greater than 26.0 acre-feet at a = 0.01. (b) Compute the power of the test if the true mean rainfall is 28.0 acre-feet.
Use a = 0.01.
There is insufficient
evidence to
indicate that the true mean rainfall is greater
than 26.0 acre-feet at a = 0.01.
(b) Compute the power of the test if the true
mean rainfall is 28.0 acre-feet.
i 0.0
Round your answer to one decimal place (e.g.
98.7).
(c) What sample size would be required to
detect a true mean rainfall of 28.5 acre-feet
if we wanted the power of the test to be at
least 0.9?
nz
i 75
Round your answer to the nearest integer.
Transcribed Image Text:Use a = 0.01. There is insufficient evidence to indicate that the true mean rainfall is greater than 26.0 acre-feet at a = 0.01. (b) Compute the power of the test if the true mean rainfall is 28.0 acre-feet. i 0.0 Round your answer to one decimal place (e.g. 98.7). (c) What sample size would be required to detect a true mean rainfall of 28.5 acre-feet if we wanted the power of the test to be at least 0.9? nz i 75 Round your answer to the nearest integer.
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