Estimating the percentage of us residents
A researcher is interested in estimating the percentage of US residents without health insurance. How large a sample is needed so that the maximum margin of error of a 95% confidence interval is no greater than 1%?
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A fuel oil is analyzed and found to contain 85.0 wt% carbon, 12.0% elemental hydrogen (H), 1.7% sulfur, and the remainder noncombustible matter.
Water flows in a 5-m-wide channel with a speed of 2 m/s and a depth of 1m. The channel bottom slopes at a rate of 1 m per 1000 m. Determine the Manning coefficient for this channel.
It is believed 30% of all adults are overweight. How larger sample is necessary to estimate the true proportion of adults who are overweight with a 95% confidence interval so that the margin of error of the estimate is no greater than 2 percentage
If the maximum acceleration it experiences over the course of its motion is 45 m/s^2, what are the amplitude and the velocity amplitude of its motion?
Wildlife biologists are attempting to track the prevalence of rabies in Texas coyota populations. They trap and test coyotes in three widely separated counties to determine whether the prevalence, the proportion having rabies, is the same.
The bottle in the figure rides on a conveyor belt. (Part A figure) If the belt's acceleration is = 3.65 , determine the minimum coefficient of static friction that prevents the bottle from slipping. Assume that the bottle is wide enough that it wi
Demand for a particular product is normally distributed with a mean of 100 units and a standard deviation of 20 per period. What is the expected cycle service level ( aka type 1 service level)?
The 20-mm-diametersteel bolt is placed in the aluminum sleeve. The nut is tightened until the normal stress in the bolt is 80 MPa. Determine the normal stress in the sleeve.
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