Mathematics, 27.02.2020 01:23 lorie76
Which of the following SRS designs (sampling without replacement) will give the most precision (smallest standard error) for estimating a population mean? Assume that each population has the same value of the population variance S2. (a) An SRS of size 400 from a population of size 4000 (b) An SRS of size 30 from a population of size 300 (c) An SRS of size 3000 from a population of size 300,000,000 (d) What does this problem illustrate about
Answers: 1
Mathematics, 21.06.2019 15:30
Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles
Answers: 1
Mathematics, 21.06.2019 16:50
The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60
Answers: 1
Mathematics, 21.06.2019 19:00
Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.
Answers: 3
Mathematics, 21.06.2019 20:30
The graph of y x3 is translated so that the point (1. 1) is moved to (1, 4). what is the equation of the new graph?
Answers: 1
Which of the following SRS designs (sampling without replacement) will give the most precision (smal...
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