Mathematics, 25.04.2020 03:28 ashleyd198308
The tensile strength of stainless steel produced by a plant has been stable for a long time with a mean of 72 kg/mm2 and a standard deviation of 2.15. A machine was recently adjusted and a sample of 50 items were taken to determine if the mean tensile strength has changed. The mean of this sample is 74.28. Assume that the standard deviation did not change because of the adjustment to the machine. Find a 95% confidence interval for the mean of tensile strength after the machine was adjusted. Does this data suggest that the tensile strength was changed after the adjustment
Answers: 3
Mathematics, 21.06.2019 15:50
Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares
Answers: 1
Mathematics, 21.06.2019 19:30
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Answers: 1
Mathematics, 21.06.2019 20:00
Ialready asked this but i never got an answer. will give a high rating and perhaps brainliest. choose the linear inequality that describes the graph. the gray area represents the shaded region. y ≤ –4x – 2 y > –4x – 2 y ≥ –4x – 2 y < 4x – 2
Answers: 1
The tensile strength of stainless steel produced by a plant has been stable for a long time with a m...
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