Best estimate of the population proportion
The estimate of the population proportion is to be within plus or minus .05, with a 99 percent level of confidence. The best estimate of the population proportion is .19. How large a sample is required?
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A 3.3T magnetic field makes a 45 degree angle with a square loop 32cm on a side. What's the magnetic flux through the loop? Express your answer to two significant figures and include the appropriate units.
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