Mathematics, 19.03.2022 01:00 SoccerHalo
A valve manufacturer produces a butterfly valve composed of two semicircular plates on a common spindle that is used to permit flow in one direction only. The semicircular plates are supplied by a vendor with specifications that the plates be 2.37 millimeters thick and have a tensile strength of five pounds per millimeter. A random sample of 20 such plates is taken. Electronic calipers are used to measure the thickness of each plate; the measurements are given here. Assuming that the thicknesses of such plates are normally distributed, use the data to construct a 95% level of confidence for the population mean thickness of these plates.
Thickness Strength
2.4066 4.9175
2.1328 4.8067
2.5937 5.1246
2.1933 4.7555
2.4579 4.7233
2.0665 4.3934
2.1994 4.4609
Required:
a. Find point estimates of the thickness and tensile strength data. Compare with the specifications.
b. Construct a 95% confidence for thickness. Draw conclusions regarding the specification relative to the confidence interval.
c. Construct a 95% confidence for tensile strength. Draw conclusions regarding the specification relative to the confidence interval.
d. Construct a 95% confidence interval for the proportion of plates whose thickness is greater than the specification.
Answers: 2
Mathematics, 21.06.2019 18:00, dizzleman3030
Find the perimeter of the figure shown above. a. 40 cm c. 52 cm b. 60 cm d. 75 cm select the best answer from the choices provided
Answers: 1
Mathematics, 21.06.2019 19:50, keigleyhannah30
Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.
Answers: 3
Mathematics, 21.06.2019 21:10, zahradawkins2007
Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x
Answers: 2
A valve manufacturer produces a butterfly valve composed of two semicircular plates on a common spin...
Physics, 27.06.2019 12:20
Mathematics, 27.06.2019 12:20
Physics, 27.06.2019 12:20
Spanish, 27.06.2019 12:20