Supercavitation is a propulsion technology for undersea vehicles that can greatly increase their speed. It occurs above approximately 50 meters per second, when the pressure drops off sufficiently to allow the water to dissociate into water vapor forming a gas bubble behind the vehicle. When the gas bubble completely encloses the vehicle, supercavitation is said to occur. Eight (n = 8) tests were conducted on a scale model of an undersea vehicle in a towing basin with the average observed speed I = 102.2 meters per second. Assume that speed is normally distributed with o = 4 meters per second. Use a = 0.05. (a) Test Ho : H= 100 versus H1 :µ < 100. cannot reject null
Supercavitation is a propulsion technology for undersea vehicles that can greatly increase their speed. It occurs above approximately 50 meters per second, when the pressure drops off sufficiently to allow the water to dissociate into water vapor forming a gas bubble behind the vehicle. When the gas bubble completely encloses the vehicle, supercavitation is said to occur. Eight (n = 8) tests were conducted on a scale model of an undersea vehicle in a towing basin with the average observed speed I = 102.2 meters per second. Assume that speed is normally distributed with o = 4 meters per second. Use a = 0.05. (a) Test Ho : H= 100 versus H1 :µ < 100. cannot reject null
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Supercavitation is a propulsion technology for
undersea vehicles that can greatly increase their
speed. It occurs above approximately 50 meters per
second, when the pressure drops off sufficiently to
allow the water to dissociate into water vapor forming
a gas bubble behind the vehicle. When the gas bubble
completely encloses the vehicle, supercavitation is
said to occur. Eight (n = 8) tests were conducted on a
scale model of an undersea vehicle in a towing basin
with the average observed speed I = 102.2 meters per
second. Assume that speed is normally distributed
with o = 4 meters per second. Use a = 0.05. (a) Test Ho :
µ = 100 versus H1 :µ < 100. cannot reject null
hypothesis (b) Compute the power of this test if the
true mean speed is low as 95 meters per second.
Round your answer to four decimal places Ce.g.
98.7654). 0.9706 (c) What sample size would be
required if we want to detect a true mean speed as low
as 93 meters per second if we wanted the power of the
test to be at least 0.85. i 2 Statistioal Tables and Charts
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