Confidence interval for the standard deviation
A random sample of size 16 is chosen from a population & has 90% confidence interval for the standard deviation will be determined. What amount of the data is located in each tail?
0.05
0.10
0.90
0.45
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Also conduct a test of hypothesis at the 5% significance level. Does the statistical evidence support the manufacturer's claim? And what is the p value?
What object distance would give a focused image with a spatial frequency of 20 line pairs/ mm when the object consists of a bar chart with black bars 0.5 mm wide separated by .5 mm? Assume an objective lens with a focal length 200 mm.
The isentropic efficiencies of the turbine and pump are 85% and 82% respectively. Determine the turbine exit quality and the cycle efficiency.
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The extraction steam from the turbine enters the heater at 4 MPa, 275°C, and leaves as saturated liquid. What is the required mass flow of the extraction steam (kg/s)?
The Coca-Cola Company reported that the mean per capita annual sales of its beverages in the United States was 423 eight-ounce servings (Coca-Cola Company website, February 3, 2009).
Compare the turbine exit quality for a simple cycle (without reheat) with that for the low-pressure turbine exit quality of a reheat cycle where the exit at 0.8 MPa of the high-pressure turbine is reheated to 400°C.
AC has a diameter of 0.5 in L=5in, and CDB has a diameter of 1 in Lcd=8 in Ldb=12 in. If it is fixed at its ends A and B and subjected to a torque of 500 lb-ft, determine The reaction Torques at A and B.
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