Research at the university of toledo indicates that 50% of students change their major area of study after their first year in a program. a random sample of 100 students in the college of business revealed that 48 had changed their major area of study after their first year of the program. has there been a significant decrease in the proportion of students who change their major after the first year in this program? test at the .05 level of significance.

good luck on your studies! : )

david edward.

add a pic of the graph, then ill edit this "answer" and solve it for you : 3

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb