Reference no: EM131008919
1. Pizza sales and price, part 2. For the data in Exercise 31, the average Sales was 52,697 pounds (SD = 10,261 pounds), and the correlation between Price and Sales was = - 0.547.
If the Price in a particular week was one SD higher than the mean Price, how much pizza would you predict was sold that week?
2. Used Saab prices, part 2. The 38 cars in Exercise 32 had an average Price of $23,847 1SD = $9232, and the correlation between Price and Mileage was = - 0.169.
If the Mileage of a 2004 Saab was 1 SD below the average number of miles, what Price would you predict for it?
3. Packaging. A CEO announces at the annual share- holders meeting that the new see-through packaging for the company's flagship product has been a success. In fact, he says, "There is a strong correlation between packaging and sales." Criticize this statement on statistical grounds.
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Find electric field intensity outside spherical shell
: Electric field due to conducting shell. A spherical shell of radius a is charged with a uniform surface charge density p,. Find the electric field intensity inside and outside the spherical shell.
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Equation of the regression line
: GDP growth, part 2. From the linear model fit to the data on GDP growth in Exercise 45. a) Write the equation of the regression line. b) What is the meaning of the intercept? Does it make sense in this context?
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Calculate electric field intensity it produces everywhere
: Electric field of the electron. The structure of the electron is not defined (that is, its dimensions cannot be identified with certainty). Its charge, however, is considered to be a point charge. Suppose the electron is a point charge equal t..
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Problem regarding the salary by job type
: At a small company, the head of human resources wants to examine salary to prepare annual reviews. He selects 28 employees at random with job types
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Pizza sales and price
: Pizza sales and price, part 2. For the data in Exercise 31, the average Sales was 52,697 pounds (SD = 10,261 pounds), and the correlation between Price and Sales was = - 0.547.
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Calculate the electric field intensity
: Field due to volume charge density. A short plastic cylinder of length L and diameter L/2 has a uniform volume charge density Pv distributed throughout its volume. Calculate the electric field intensity at P 1 , P2 , and P3 (on the axis of the cyl..
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Calculate the electric field intensity in free space
: Electric field of infinite surface. Calculate the electric field intensity in free space at a distance d above an infinite plane charged with a uniform surface charge density p,. Show that the electric field intensity is independent of d and pe..
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Used saab prices
: A linear model to predict the Price of a 2004 Saab 9-3 (in $) from its Mileage (in miles) was fit to 38 cars that were available during the week of January 11, 2008 (Kelly's Blue Book, www.kbb.com). The model was:
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Calculate the total force one segment exerts on the other
: Electrostatic forces. Two thin, segments, each 1 m long, are charged with line charge densities of 10 nC/m and -10 nC/m and are placed a distance 10 mm apart, parallel to each other. Calculate the total force one segment exerts on the other.
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