Regression methods were used to analyze the data from a study investigating the relationship between compressive strength (x) and intrinsic permeability (y) of various concrete mixes and cures. Summary quantities were n=20, LaTeX: \sum y_i∑ y i=572, LaTeX: \sum y_i^2∑ y i 2=23,530, LaTeX: \sum x_i∑ x i=43, LaTeX: \sum x_i^2∑ x i 2=157.42 and LaTeX: \sum\left(x_i\times y_i\right)∑ ( x i × y i )=1697.80. 1. Calculate the least squares estimate of the slope of the regression line. (2 pts) 2. Calculate the least square estimate of the intercept of the regression line. (2 pts) 3. Calculate the error sum of square, SSE. (2 pts) 4. Estimate the variance of the error term, LaTeX: \epsilonϵ. (2 pts) 5. Suppose that the observed value of permeability at x= 3.5 is y=41. Calculate the value of the corresponding residual e. (2 pts)

2

step-by-step explanation:

1+1=2

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

vertical asymptote .

horizontal asymptote .

step-by-step explanation:

given function is .

vertical asymptote is given by setting

denominator =0

when degree of numerator and denominator are same then divide first term of numerator by first term of denominator to get horizontal asymptote.

the equation is not included but the answer is (1.50, 2.00, 2.75)

step-by-step explanation: