Researchers studying the abundance of sunfish want to investigate factors that contribute to how many fish live in sections of Lake Travis. So they sample different sections of the lake and measure the fish density (number of fish/cubic meter), as well as water temperature (°C), water pH, and whether or not there was a predator present. They ran the following multiple linear regression model with Fish Density as the response variable, confirmed all assumptions, and got the following results:
Estimate SE t | p-value 1.88 3.05 < 0.001 5.73 0.60 0.17 3.53 < 0.001 Intercept Water Temp (mean-centered) Water pH (mean-centered) Predator (O=No, 1=Yes) Water Temp* Predator 1.21 0.58 2.09 0.04 0.02 -2.76 -0.81 1.16 0.32 -2.38 -2.53 0.01 Model df = 54 Adjusted R2 = 0.236
a. Interpret the estimate for Water Temp in context, citing the appropriate statistics. Be specific.
b. Predict the fish density when predators are present at the mean water pH and at a water temperature that is 2oC above the mean. Round to two decimal places and don't include units.

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it

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

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values