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.
A magnetic field increases from 0 to 0.12 T in 1.8 s. How many turns of wire are needed in a circular coil 14 cm in diameter to produce an induced emf of 5.4 V?
Find the peak emf in this coil when it's rotating at 110Hz in a strong 6.6T field. Express your answer to one significant figure and include the appropriate units.
A 220-turn coil carries 320mA . If the magnetic flux through the coil due to this current is 0.80Wb, what's the coil's inductance? Express your answer to two significant figures and include the appropriate units.
A population is estimated to have a standard deviation of 13. We want to estimate the population mean within 3, with a 99 percent level of confidence.
You have a variable capacitor ranging from 5.9 pF to 9.9 pF . What inductor should be used with this capacitor in an FM radio receiver covering the entire FM band, 85MHz to 110MHz? Express your answer to two significant figures and include the app
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A survey of 36 randomly selected "iPhone" owners showed that the purchase price has a mean of $392 with a sample standard deviation of $175. Compute the standard error of the sample mean.
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Keeping in mind your answers above, provide a clear, concise definition for violence that should be used when watching the video.
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