The melting points of two alloys used in formulating solder were investigated bymelting 21 samples of each material. The sample mean and standard deviationfor alloy 1 was īi = 420°F and si =T2 = 426°F and s2 = 3°F. Find a 95% confidence interval on the difference in4°F , and for alloy 2, they were%3Dthe two means.(-0.061, 0.861)-4.119, 15.129)(-8.205, –3.795)(1.857, 18.943)

Solution: From the given information,

The melting points of two alloys used in formulating solder were investigated by melting 21 samples of each material. The sample mean and standard deviation for alloy 1 was īi = 420°F and s1 = 4°F , and for alloy 2, they were T2 = 426°F and s2 = 3° F. Find a 95% confidence interval on the difference in %3D the two means. O (-0.061, 0.861) O (-4.119, 15.129) (-8.205, –3.795) (1.857, 18.943)

The melting points of two alloys used in formulating solder were investigated by melting 21 samples of each material. The sample mean and standard deviation for alloy 1 was īi = 420°F and s1 = 4°F , and for alloy 2, they were T2 = 426°F and s2 = 3° F. Find a 95% confidence interval on the difference in %3D the two means. O (-0.061, 0.861) O (-4.119, 15.129) (-8.205, –3.795) (1.857, 18.943)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

The melting points of two alloys used in formulating solder were investigated by
melting 21 samples of each material. The sample mean and standard deviation
for alloy 1 was īi = 420°F and si =
T2 = 426°F and s2 = 3°F. Find a 95% confidence interval on the difference in
4°F , and for alloy 2, they were
%3D
the two means.
(-0.061, 0.861)
-4.119, 15.129)
(-8.205, –3.795)
(1.857, 18.943)

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