Mathematics, 01.07.2019 23:10 smallp0720
In semiconductor manufacturing, wet chemical etching is often used to remove silicon from the backs of wafers prior to metalization. the etch rate is an important characteristic in this process and known to follow a normal distribution. two different etching solutions have been compared, using two random samples of 10 wafers for each solution. assume the variances are equal. the etch rates are as follows (in mils per minute): solution 1 solution 2 9.7 10.5 10.4 10.2 9.4 10.3 10.6 10.2 9.3 10.0 10.7 10.7 9.6 10.3 10.4 10.4 10.2 10.1 10.5 10.3 (a) calculate the sample mean for solution 1: round your answer to two decimal places (e. g. 98.76). (b) calculate the sample standard deviation for solution 1: s1
Answers: 1
Mathematics, 21.06.2019 20:10
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Mathematics, 21.06.2019 23:00
If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.
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Mathematics, 22.06.2019 00:30
Which ordered pair is a solution of the equation? 2x+3y=10
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Mathematics, 22.06.2019 02:30
Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )
Answers: 3
In semiconductor manufacturing, wet chemical etching is often used to remove silicon from the backs...
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