A university professor wanted to know if the attitudes towards stats changed during the course of the semester. She took a simple random sample of students and gave them a test at the beginning of the term to assess their feelings toward stats. When the sememster was finished she administered another test to the same group of students and wanted to see if there was a difference b/w the average attitudes towards stats. What type of analysis would be most appropriate analysis? a. matched pairs t test
b. independent t tests
c. one sample t tests
d. none are appropriate

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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answer: plz give a pic and answer choices so i can answer!

step-by-step explanation:

good luck on your studies! : )

david edward.

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.