Researchers conducted a study to examine the association of clinical factors at birth with sudden infant death syndrome (SIDS) (Platt et al., 2000). The researchers randomly sampled the medical records of infants who died of SIDS from a large database. The study found 63 infants who had a premature birth in 323 medical records, which produced a 95% confidence interval of 0.20±0.04 . What can the researchers conclude about this confidence interval?

i am unable to solve this problem

step-by-step explanation:

step- i d k and i d c : )

you: : 0

bye

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy