Reference no: EM13867502
For the following questions, would you collect information using a sample or a population? Why?
a. Statistics 201 is a course taught at a university. Professor A. Verage has taught nearly 1,500 students in the course over the past 5 years. You would like to know the aver- age grade for the course.
b. As part of a research project, you need to report the average profitability of the number one corporation in the Fortune 500 for the past 10 years.
c. You are looking forward to graduation and your first job as a salesperson for one of five large pharmaceutical corporations. Planning for your interviews, you will need to know about each company's mission, profitability, products, and markets.
d. You are shopping for a new MP3 music player such as the Apple iPod. The manu- facturers advertise the number of music tracks that can be stored in the memory. Usu- ally, the advertisers assume relatively short, popular music to estimate the number of tracks that can be stored.
You, however, like Broadway musical tunes and they are much longer. You would like to estimate how many Broadway tunes will fit on your MP3 player.
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Explain the difference between a sample and a population
: Explain the difference between a sample and a population. Explain the difference between a discrete and a continuous variable. Give an example of each not included in the text.
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The antimatter reactor fails
: A spaceship of mass 2.30×106kgis cruising at a speed of 4.70×106m/swhen the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 5.10×105kg, is blown straight backward with a speed of 2.40×106m/s. A second piece..
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The string has a linear mass density
: What frequency should you set a wave driver to if you want to see the fundamental frequency if you have a 2.8 m total-length string, stretched over a support 1.2 m from the wave driver, and a 0.35 kg mass hanging off the end of the string? The string..
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The current year and expects to earn
: Pinecone Company has plan assets of $500,000 at the beginning of the current year and expects to earn 12% on its plan assets during the year.
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Would you collect information using a sample or a population
: For the following questions, would you collect information using a sample or a population? As part of a research project, you need to report the average profitability of the number one corporation in the Fortune 500 for the past 10 years.
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Consider the magnetic flux through a coil of wire
: Consider the magnetic flux through a coil of wire with an area A=200cm^2 and n=100turns. If a magnetic field is increasing through the coil at a rate of 0.8 Tesla/sec, what is the induce emf around the coil?
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A space station shaped like a giant wheel
: A space station shaped like a giant wheel is locatedfar from anything else in space, and has a radius of 100.0 m. When unoccupied, it has a moment of inertiaI = 5.000 × 108 kg m2. A crew of 150 is living on the rim, and the space station's rotation c..
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A 50 kg uniform horizontal beam of length 3.0
: A 50 kg uniform horizontal beam of length 3.0 m is attached toa brick wall by a bracket at the wall and a cable attached to the far end that makes an angle of 60? with thehorizontal. A 75.0 kg person stands on the beam, 1 meter away from the wall.
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The company amortizes the prior service cost
: Palm Company's actuary has computed its prior service cost to be $5,000,000. The company amortizes the prior service cost by the straight line method over the remaining 25 year service life of its active employees.
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