Answer:
slope= 0.52
Step-by-step explanation:
For American women
Mean (x) = 64 inches
Standard deviation (sx) = 2.7 inches
For American Men
Mean(ÿ) = 69.3 inches
Standard deviation (sy) = 2.8 inches
r = 0.5
Slope = ??
Husband height = Y
Wife height = X
the general equation of regression line
y = a + bx
The slope of the regression line is the linear correlation coefficient multiplied by the standard deviation for Y
b = r (sy/sx)
b = 0.5(2.8/2.7)
b = 0.52
The intercept a = ÿ - bx
a = 69.3 - 0.52(64)
a = 69.3 - 33.28
a = 36.02
The equation of the regression line y = a + bx
y = 36.02 + 0.52x
Multiply the left and right side by 7 to get rid of the denominator, leaving you with 6x=-84. Then divide, x=-84/6, x=-14!
Answer:
Y = -x - 1
Step-by-step explanation:
Slope (rise / run) is -1 and the y-intercept is -1.
Hoep this helps. Pls give brainliest.
Answer:
the answer is C
Step-by-step explanation:
You have to distribute 1st and multiply both sides in order to correvtly get an accurate equation to find X.