Estimate the population mean
Determine the sample size needed to construct a 90% confidence interval to estimate the population mean when ? = 75 and the margin of error equals 12.
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Before prorating the manufacturingoverhead costs at the end of 2008, the Cost of Goods Sold andFinished Goods Inventory had applied overhead costs of $57,500 and$20,000 in them, respectively.
Calculate the magnitudes of (a) the force of friction on the bicycle from the road and (b) the net force on the bicycle from the road.
The IRS reported that 62% of individual tax returns were filed electronically in 2008. A random sample of 225 tax returns from 2010 was selected. From this sample, 163 were filed electronically.
A 2.00kg block hangs from a spring. A 300g body hung below the block stretches the spring 2.00cm farther. (a) What is the spring constant? (b) If the 300g body is removed and the block is set into oscillation, find the period of motion.
Determine the sample size needed to construct a 95% confidence interval to estimate the population mean for the following margins of error when ? = 80:
There is an oscillating simple pendulum slowing down. Assuming time starts when the pendulum is released, find an equation for the angle as a function of time. (Note: you must include damping for full credit.)
Determine the sample size needed to construct a 90% confidence interval to estimate the population proportion when p = 0.65 and the margin of error equals 6%.
Ivan invests in land and Grace invests in taxable bonds. The landappreciates by $8,000 each year, and the bonds earn interest of$8,000 each year. After holding the land and the bonds for fiveyears, Ivan and Grace sell them.
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