Normal distribution and number of observations
Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis when for a two-tailed test.
A) ±2.052
B) ±1.4805
C) ±2.33
D) ±1.645
Expected delivery within 24 Hours
A car begins from rest and moves about a circular track of radius 30.0m. Its speed rises at the constant rate of 0.500m/s2. (i) Determine the magnitude of the total linear acceleration of 15.0 s later? ) What angle does this total acceleration vec
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Explain why is it beneficial to use a standard wavelength in order to compute the energy of the photons emitted by the hydrogen atoms?
Your boat is moving at the speed of 15 miles per hour at the angle of 25 degrees upstream on the river flowing at 4 miles per hour. Determine the vector representing your boat's velocity relative to the ground.
At 20.0°C an unknown liquid having 32.5-g sample is heated to 120°C. During this heating, the density of the liquid changes from 0.854 g/cm3 to 0.797g/cm3. Explain what volume would this sample occupy at120°C?
A researcher is interested in estimating the average salary of teachers in a large urban school district. She wants to be 95% confident that her estimate is correct.
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Park ranger at point A sees the fire in direction N 27o44' E. Another ranger at point B, 8 miles due east of A, sites the same fire at N 52o43' W. Find distance from point B to fire.
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