Loss of hearing can be a significant problem for older adults. A home education program has been developed to help people who are receiving hearing aids for the first time. The program emphasizes communication and social skills. To evaluate this program, quality of life scores were measured before the treatment, at the end of the program, and at the 6 month followup. Pls use the data to determine if there was a significant improvement in quality of life following the training program. Quality of life score
person before after 6 months
A 3 7 8
B 0 5 7 N=12
C 4 9 5 G=60
D 1 7 4 ∑
∑
X2=384
M=2 M=7 M=6
SS=10 SS=8 SS=10

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step-by-step explanation:

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form

the answer is d

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