If the LSRL relating the independent variable x and the dependent variable y for a given problem is ŷ = 3x + 5, then an increase of 1 unit in x is associated with an increase of how many units in y?

3

Step-by-step explanation:

The slope in the linear regression line shows the increase in dependent variable y due to unit change in independent variable x.

The given LSRL( least square regression line) is

y^=3x+5

Here, 3 represents the slope of line and 5 represents intercept of the line.

So, the increase of 1 unit in x is associated with an increase of 3 units in y.

i'm going to search it

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15