The thickness of a printed circuit board is an important quality parameter. Data on board thickness (in inches) are given in the following table for 25 samples of three boards each. (Please refer to the excel file for the data.)Samplex1x2x310.06290.06360.06 420.06300.06310.062230.06280.06310. 063340.06340.0630.063150.06190.0628 0.06360.06130.06290.063470.06300.06 390.062580.06280.06270.062290.06230 .06260.0633100.06310.06310.0633110. 06350.0630.0638120.06230.0630.06313 0.06350.06310.063140.06450.0640.063 1150.06190.06440.0632160.06310.0627 0.063170.06160.06230.0631180.06300. 0630.0626190.06360.06310.0629200.06 400.06350.0629210.06280.06250.06162 20.06150.06250.0619230.06300.06320. 063240.06350.06290.0635250.06230.06 290.063a. Set up x-bar and R control charts for a=0.0027. Is the process in statistical control? Please draw a plot. b. Set up x-bar and S control chart, and compare the S chart with the R chart in part (a). Please draw a plot. Hint: In this case, you should re-estimate the variance of x-bar and re-calculate the x-bar chart.

What does h hours mean

Answer: question no. 1 -a. yes, the sides are in the ratio 2 : 5.question no. 2 -b. 59°question no. 3 -c. angles x and y are remote interior angles.question no. 4 -d. 90°, 45° and 45°question no. 5 -b. mn and qrstep-by-step explanation: question no. 1 -rs : xu = 3 : 7.5 = 2 : 5rt : x? = 6.4 : 16 = 2 : 5st : u? = 6 : 15 = 2 : 5as the ratios of all sides are equivalent, the triangles must be congruent and the sides must be proportional.therefore, the answer is: a. yes, the sides are in the ratio 2 : 5.question no. 2 -in the second diagram, angle b is the only letter not shown. therefore, the number must be equivalent to angle b.if we substitute the value of angle b as being 22° in the first diagram, we can now use the angle sum of a triangle to obtain the value of angle a.angle sum of a triangle = 180°therefore: let angle a = aa + 99 + 22 = 180a = 180 - 99 - 22a = 59°therefore, the answer is: b. 59°question no. 3 -angles x and y don't share the vertex of the triangle with the exterior angle w. remote interior angles don't share a vertex of a triangle with an exterior angle. this means that angles x and y are remote interior angles.therefore, the answer is: c. angles x and y are remote interior angles.question no. 4 -the sum of all interior angles of a triangle must be equivalent to 180°.90°, 45° and 45° are the only set of angle measures that are equivalent to 180°.therefore, the answer is: d. 90°, 45° and 45°question no. 5 -the only pair of sides stated in the options which are corresponding are mn and qr.therefore, the answer is: b. mn and qr.