Value of the test statistic for testing
The value of the test statistic for testing if one population mean is larger than the other, based on samples of size 24 and 19, is 2.45. What is the p-value for the test? Give your answer to 4 decimal places.
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The sample standard deviations for two independent samples of size 20 each are 12 and 15. What is the estimate of the pooled standard deviation? Give your answer to 2 decimal places.
Neglect heat transfer and potential energy changes. Find: a) the mass flow rate at the exit (kg/s), b) the exit velocity (m/s) and c) the exit flow area (cm2).
The coefficient of kinetic friction between the box and the floor is µk = 0.47. If the system is set moving at v = 10.0 m/s with the block in front of the box, how long does it take for the system to come to rest?
Two independent samples of size 20 each are taken to test for a difference in the corresponding population means. The sample means differ by 5, and the pooled variance is 15. What is the value of the test statistic? Give your answer to four decima
For an actuator that has an inside diameter of 0.50 in and a length of 42.0 in and that is filled with a machine oil, compute the stiffness in lb/in.
When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.
In a random sample of 225 subjects, the sample proportion is found to be 0.55. Determine the test statistic. Determine the P-value for this test.
The radical gap between the piston and cylinder is 0.002 in. If the piston is decelerating at a rate of 3.22 ft/s, determine the viscosity of the oil film between the piston and cylinder. Givens: piston diameter = 8 in, piston height = 6 in.
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