Sample data and confidence level
Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n=550, x=165, 90% confidence ___< p < ___
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Two cylindrical rods, one of stainless steel and the other of red brass, are joined at C and restrained by rigid supports at A and E. Determine the reactions at A and E and the deflection of point C.
Two equal resistances are connected in the gaps of a meter bridge. If the resistance in the left gap is increased by 10%, by what percent does the balance-point shift (and in which direction) ?
Assume that a random sample is used to estimate a population p. find the margin of error E that corresponds to the given statistics and confidence level. n=500, x=250, 95% confidence The margin of error E=___
In this case, you cannot assume that the system is adiabatic. If the mass flow rate is 9.4 kg/s, find the rate of heat transfer to the surroundings.
By the time he reaches the top, the box is now at a height of 1.35m from the ground. What is the box's potential energy?
Two points B and C lie on radial line of a rotating disk. The points are 2 inches apart. VB=700 ft/min and VC=880ft/min. Find the radius of rotation for each of these points.
A 3000lb car is driven down a 5 degree incline at speed of 50mph. highway with radius 400 m and speed of 90 km/h. The brakes are applied causing a total braking force of 1200lbs to the vehicle. How far does the car go before it stops?
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