Mathematics, 10.09.2019 04:20 Nycin
Aquality control engineer is interested in the mean length of sheet insulation being cut automatically by machine. it is known that the standard deviation in the cutting length that this machine produces is 0.20 feet. a sample of 75 cut sheets yields a mean length of 12.25 feet. this sample will be used to obtain a confidence interval for the mean length cut by machine. referring to scenario 1, the z value to use in obtaining the 95% confidence interval is approximately .
a. 2.58.
b.1.96.
c. 1.75.
d. 1.645.
Answers: 3
Mathematics, 21.06.2019 21:00
Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)
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Mathematics, 21.06.2019 22:00
What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?
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Mathematics, 21.06.2019 22:30
Which of the following represents the length of a diagonal of this trapezoid?
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Aquality control engineer is interested in the mean length of sheet insulation being cut automatical...
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