Find a non-zero vector in the column space of A. A = -8 4 -20 12 -25 -4 -6 -5 24 0 30

-15 -20 as a linear combination of the vectors 11 Q write -15 A 11 -20 = 1 1 -0·8·6 1 4. + + -2 A -2 1

Is Vector Y in the Column space of A? What is the solution set? Write y as an appropriate linear combination. 8 1 9 a = (-5 9 -1 Y= %3D 10 8

Determine whether the set of vectors is orthogonal. [-10] 10] [-10] -20 0 10 -10 -10 Select one: O A. Yes O B. No -10

Express each column vector of AA as a linear combination of the ordered column vectors C₁, C2, and c3 of A. -6 A = 6 2 4 3 Enter first column as a linear combination of columns of A in terms of the vectors C₁, C₂, and c3: Enter second column as a linear combination of columns of A in terms of the vectors C₁, C2, and c3: Enter third column as a linear combination of columns of A in terms of the vectors C₁, C₂, and c3:

Loblolly is a built-in R dataset that that records the growth of Loblolly pine trees. We are interested in the height column of Loblolly. The values in the height column can be converted into a vector of name x by the assignment: x <- Loblolly$height We can see the values in x by typing x and Return or Enter. Remember x <- Loblolly$height After this assignment, we can see the first six values in x by typing head(x) and Return or Enter a. Give the R code to assign the values in in the height column of Loblolly to the vector named x. (Easy-see above) b. Calculate the interquartile range of x using the R, IQR() function. c. Calculate the sum of the squares of the values in x. d. Calculate the sample mean of x. e. Calculate the sample variance of x. f. Calculate the sample standard deviation of x. f. Using R, calculate a trimmed mean of x. [ h.Enter your R script in the box below.

. Create a vector named prob18a that has 10 elements of which the first is 8, the increment is 7, and the last element is 71. Then, assign elements of prob18a to a new vector prob18b such that prob18b has 7 elements. The first 4 elements of prob18b are the first 4 elements of the vector prob18a and the last 3 elements of prob18b are the last 3 elements of prob18a. Do not type the vector elements explicitly.