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Question: A public health official is charged with completing an annual survey of a county population, checking for incidents of a certain viral infection over the past year.
(a) Suppose she wants a 99% confidence level in the results of the survey with an error of no more than 3%. How many people should she survey?
(b) How many people should she survey if, in (a), she is willing to settle for a 95% confidence level?
(c) Suppose, in the previous year's study, it was found that, p¯ = 0.12. Make an estimate of how many people she should survey for a 99% confidence level and an error of no more than 2%.
Use the information about the Statue of Liberty on page 88 to explain how equations are used to describe heights. Include an equation relating the heights of the Sears Tower, which is 1454 feet tall, the two antenna towers on top of the building, ..
Assume S is a subset of the complex number set. Please make the explanations clear and give examples.
Determine whether the given graph has a Hamilton circuit. If it does, find such a circuit. If it does not, give an argument to show why no such circuit exists.
Two planes are 1,100 miles apart. They fly towards each other, one at 100 mph and the other at 175 mph. How long does it take the planes to pass each other (round to the nearest hundredth)?
3. A 7-in. pizza costs $8 and a 14-in. pizza costs $20. Tommy says the smaller pizza is a better buy because the larger pizza is twice as big and more than twice as expensive. Do you agree with his reasoning? If not, explain why not.
In your own words, what does it mean for two equations to be dependent or to be independent? Type an equation for g(x) that results, with f(x), in an independent and consistent system: f(x) = 2x - 8 g(x) = ?
Identify the shape of each face. Tell the number of congruent faces. Refers to standards 2.G.1 and 2.G.2 Use the sets below to answer the question. What rule did Ray use to sort the shapes above into two groups?
Highway engineers design a parabolic curve for an entrance ramp from a straight street to an interstate highway . The vertex of the curve passes through (0, 0) and the parabola passes through (1000, + 800). Find an equation for the parabola.
If many samples of size 15 (that is, each sample consists of 15 items) were taken from a large normal population with a mean of 18 and variance of 5, what would be the mean, variance, standard deviation and shape of the distribution of sample mean..
A baseball diamond is square with sides of 90 feet. What is the shortest distance, to the nearest tenth of a foot, between first base and third base?
The discussion of the section above includes no explicit calculation of a finite Fourier transform. Show that explicit calculations of finite Fourier transform.
about 80 of babies born with a certain ailment recover fully. a hospital is caring for seven babies with this ailment.
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