Livestock are given a special feed supplement to see if it will promote weight gain. The researchers report that the 77 cows studied gained an average weight of 56 pounds, and that a 95% confidence interval for the mean weight gain this supplement produces has a margin of error of +/- 11 pounds. After reading the report, several people tried to interpret the results of the study. Their statements are given below. For each statement, decide whether it is an accurate interpretation or an incorrect interpretation.

i dont know i just need points

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b

15: 24

62.5%

step-by-step explanation: