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1.Suppose that for a given data set, s2x=440,s2y=820,r=0.35,n=7
Then the regression standard error is:
2.Suppose that a regression yields the following sum of squares: Σ(yi-y¯)2=200, Σ(yi-yˆi)2=90, Σ(yˆi-y¯)2=110
Then the percentage of the variation in y that is explained by the variation in x is:
The number attending is 2/3 of the previous year's attendance, in what year will the attendance be less than 1/3 the original attendance
What is the distance between town and John's current location?
Calculate d/dx cos(x) by using the chain rule and the trig identities and write tan(x); sec(x); csc(x); and cot(x) in terms of sin(x) and cos(x):
Show that if G is a 2-connected graph containing a vertex that is adjacent to at least three vertices of degree 2, then G is not hamiltonian.
The American Orthopedic Foot and Ankle Society in a study of 356 women found that 313 women were wearing shoes that were at least one size too small.
Linear Transformations, Rotations, Submodules and Subspaces, (7) Let F=R, let V=R^2 and let T be the linear transformation from V to V which is rotation clockwise about the origin by pi-radians. Show that every subspace of V is an F[X]-submodule f..
The circumference of a sphere was measured to be 80000 cm with a possible error of 050000 cm. Use linear approximation to estimate the maximum error in the calculated surface area.
A building is 388 feet tall. For a class project, Kari is to make a scale model of the building to place in the front hall display case. The display case is 17 inches tall. Which scale will allow her to make the tallest model that will fit in the ..
Find the polynomial of degree five whose graph goes through the points (0,5), (1,-1), (2,5) and whose slope at x=0 is -1, at x=1 is -2, and at x=2 is 3.
Find the z score that has 11.7 of the distribution area to its left
Find the elasticity of demand E for the demand function q = 40,000 - 10p2.
after 10 min the process is stopped, and fresh water is poured into the tank at a rate of 2 gal/min, with the mixture again leaving at the same rate. Find the amount salt in the tank at the end of an additional 10 min.
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