Mathematics, 18.12.2021 14:00 lilpeepxliltracy
An industrial designer wants to determine the average amount of time it takes an adult to assemble an "easy to assemble" toy. a sample of 16 times yielded an average time of 19.9 minutes, with a sample standard deviation of 6 minutes. Assuming normally of assembly times, provide a 90% confidence interval for the mean assembly time.
A. (17.43. 22.37)
B. (17.27.22.53)
C. (18.4, 21.4)
D. (16.9, 22.9)
Answers: 3
Mathematics, 21.06.2019 13:00
βabc is reflected across the x-axis and translated 2 units up to give the image βa'b'c' with coordinates a'(1, 1), b'(2, -1), c'(2, 1). what are the coordinates of the preimage βabc? a. a(-1, 1), b(-2, 3), c(-2, 1) b. a(1, 1), b(2, 3), c(2, 1) c. a(1, -3), b(2, -1), c(2, -3) d. a(1, -3), b(2, -5), c(2, -3)
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Mathematics, 21.06.2019 18:30
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Mathematics, 21.06.2019 21:00
Gabriel determined that his total cost would be represented by 2.5x + 2y β 2. his sister states that the expression should be x + x + 0.5x + y + y β 2. who is correct? explain.
Answers: 2
Mathematics, 22.06.2019 07:10
Acircle is centered at the point (5, -4) and passes through the point (-3, 2). the equation of this circle is
Answers: 1
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