A fashion designer wants to know how many new dresses women buy each year. A sample of 271 women was taken to study their purchasing habits. Construct the 90% confidence interval for the mean number of dresses purchased each year if the sample mean was found to be 8.2. Assume that the population standard deviation is 1.1. Round your answers to one decimal place.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

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

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce

answer: sherk

step-by-step explanation:

just give up and watch the best anime ever sherk