The difference in the proportions of both surveys goes from a maximum of 12.57% to a minimum of 4.76%.
Given that a survey found that in a sample of 75 families, 26 owned dogs, while a survey done 15 years ago found that in a sample of 60 families, 26 owned dogs, to find the 95% confidence intervals of the true difference in the proportions, the following calculation must be performed:
- 75 = 100
- 26 = X
- 26 x 100/75 = X
- 34.66 = X
- 34.66 x 0.95 = 32.93
- 34.66 x 1.05 = 36.40
-
60 = 100
- 26 = X
- 26 x 100/60 = X
- 43.33 = X
- 43.33 x 0.95 = 41.16
- 43.33 x 1.05 = 45.50
-
45.50 - 32.93 = 12.57
- 41.16 - 36.40 = 4.76
Therefore, the difference in the proportions of both surveys goes from a maximum of 12.57% to a minimum of 4.76%.
Learn more about maths in brainly.com/question/25989509
A.Equation
Step-by-step explanation:
A. Equation 30 plus 4
Answer:
D
Step-by-step explanation:
<u>How to find the inverse of a function.</u>
- Replace f(x) with y
- Swap x and y places. (sign doesn't matter here.)
- solve for y.
f(x) = 8√x
y = 8√x
x = 8√y
x^2 = (8√y)^2
x^2 = 64y
y = x^2 / 64
= (1/64) x^2
9514 1404 393
Answer:
y = 2
Step-by-step explanation:
-2(8 -y) = -6y
-16 +2y = -6y . . . . . eliminate parentheses
-16 +8y = 0 . . . . . . add 6y
-2 +y = 0 . . . . . . . . .divide by 8
y = 2 . . . . . . . . . . . . add 2
