A leakage test was conducted to determine the effectiveness of a geal designed to keep the inside of a plug airtight. An air needle was inserted into the plug, and the plug and needle were placed under water. The pressure was then increased until leakage was observed Let X equal the pressure in pounds per square inch. Aggume that the distribution of x is N(M.0²). The following n=5 observations of x were obtained 3.3 4.5 3.5 3.1 2.8 Joe the observations to find a 95%. confidence terval for M. (to.oas (4) = 2.7764, to.025 (5) = 2.5706, to.05 (4) = 2.1318, to.os (5) = 2.0150, 20.00 = 1.645, 05 20.025 1.96) L

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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A leakage test was conducted to determine
the effectiveness of a seal designed to keep
the inside of a plug airtight. An air needle
was inserted into the plug, and the plug and
need le were placed under water. The pressure
was then increased until leakage was observed
Let X equal the pressure in pounds per square
inch. Aggume that the distribution of x is N(M.0²)
The following n=
obtained :
observations of x were
3.3 4.5
3.5
3.1
2.8
Use the observations to find a 95%. confidence
interval for M. (to.005 (4) = 2.7764, to.025 (5) =
2.5706, to.05 (4) = 2.1318, to.os (5) = 2.0150, Zo.os = 1.645,
20.025 =
1.96)
Transcribed Image Text:A leakage test was conducted to determine the effectiveness of a seal designed to keep the inside of a plug airtight. An air needle was inserted into the plug, and the plug and need le were placed under water. The pressure was then increased until leakage was observed Let X equal the pressure in pounds per square inch. Aggume that the distribution of x is N(M.0²) The following n= obtained : observations of x were 3.3 4.5 3.5 3.1 2.8 Use the observations to find a 95%. confidence interval for M. (to.005 (4) = 2.7764, to.025 (5) = 2.5706, to.05 (4) = 2.1318, to.os (5) = 2.0150, Zo.os = 1.645, 20.025 = 1.96)
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