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Past experience indicates that the time for high school seniors to complete a standardized test is normal random variable with a mean of 35 minutes. If a random sample of 20 high school seniors took an average of 33.1 minutes to complete this test with standard deviation of 4.3 minutes, test the hypothesis at the 0.5 level of significance that U=35 minutes against the alternative that U< 35 minutes
A rod of steel is 20 m long at a temperature of 200C. find the free expansion of the rod when the temperature is raised to 65 0 C. Find the temperature stress produced
A quality characteristic is monitored by a control chart designed so the probability that a certain out-of-control condition will be detected on the first sample following the shift to that state is 1-beta.
Draw the influence line for the support reaction at A and calculate the support reaction at point
A particular unit cell is cubic with ions of type A located at the corners and facecenters of the unit cell and ions of type B located at the midpoint of each edge of the cube and at the body centered position.
Was the dam itself of sound design and a product of quality construction?
Suppose that the acceleration of the train during the interval time from t=2 to t=4 s is a 2t m/s^2, and at t = 2 s its velocity is v = 180 km/hr. What is the train's velocity at t = 4 s
If F_1=470N and theta=26 degrees, determine the magnitude of the resultant force of the three forces acting on ring A. Determine the direction of the resultant force measured counterclockwise from the positive x-axis.
Determine the mass and specific volume of argon gas in a vessel at 150 kPa and 20°C. The vessel is spherical, with radius 5 m.^5
Explain how medical technologies and the pharmaceutical industry are driving healthcare service demands and costs. What are the cost/benefits of this trend.
A company issues corporate bonds that have a coupon rate of 4%, pays dividends quarterly, and has a term of 10 years. Compute the dividend paid per quarter for each bond.
The supplier says it would prefer to sell the company a 65% NaOH solution and the company says the water content is immaterial as long as the equivalent costs are the same including freight.
Determine the moment of inertia and the radius of gyration of the shaded area with respect to the x axis.
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