Answer:
<em>95% confidence interval for the proportion of smokers who have tried to quit within the past year</em>
(0.47956 ,0.50620)
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that National Center for Health Statistics interviewed 5409 adult smokers in 2015
Sample size 'n' = 5409
Given that 2666 of them said they had tried to quit smoking during the past year.
proportion
Q = 1 - P = 1 - 0.49288 = 0.50712
<u><em>Step(ii):-</em></u>
<u><em>95% confidence interval for the proportion of smokers who have tried to quit within the past year</em></u>
(0.49288 - 0.01332 , 0.49288+0.01332)
(0.47956 , 0.50620 )
<u><em>Final answer:-</em></u>
<em>95% confidence interval for the proportion of smokers who have tried to quit within the past year</em>
(0.47956 ,0.50620)
The area is 81*pi-162. Look at the triangle formed by the chord and the two radii connected to the endpoints of the chord. Since 18^2+18^2=(18*\sqrt2)^2, this is an isosceles right triangle by Pythagorean theorem. The area of the quarter circle containing the region we look for is pi*18^2/4=81*pi. The area of the right triangle is 18*18/2=162. The difference between these two areas, or 81*pi-162, is the area of the smaller region.
Answer:
I would need to see the following fractions to answer this question.
You have that A = (9,2), B = (4,-4)
In order to find the coordinates of C, a point at the middle of the segment AC, you calculate the midpoint of each couple of coordinates.
For the first coordinate:
For the second coordinate:
Hence, the coordinate of C is C = (6.5 , -1)
For the case of the points (4a,5g) and (-6a,-g), you have:
Hence, the midpoint is (-a,2g)
Answer:
B
Step-by-step explanation:
$30 is your startup fee. You automatically pay that to join. When is is also $4 per month, you pay that much times however many months there are.