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Anastasy [175]
3 years ago
14

Fewer young people are driving. In 1983, of -year-olds had a driver's license. Twenty-five years later that percentage had dropp

ed to (University of Michigan Transportation Research Institute website, April 7, 2012). Suppose these results are based on a random sample of -year-olds in 1983 and again in 2008. a. At confidence, what is the margin of error and the interval estimate of the number of -year-old drivers in 1983? Round your intermediate answers to four decimal places. Margin of error (four decimal places)
Mathematics
1 answer:
Viefleur [7K]3 years ago
4 0
Transportation confidence confirmed
!fbi surveillance
{confidential information}
!fbi{fraud}
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Select the correct answer.
likoan [24]

Answer:

C

Step-by-step explanation:

First find how many games they need to have 90% by multiplying .9(30)=27

then, 15(.8)=12

Then 27-12=15

7 0
2 years ago
Read 2 more answers
Sorry last question :(
elena55 [62]
Area of rectangle=30•12=360 square meters
Area of semicircle=3.14•15•15=353.25 square meters
360+353.25=713.25 square meters
6 0
3 years ago
Determine the equation of the circle graphed below.
erica [24]

Answer: (-7,3)

Step-by-step explanation:

3 0
3 years ago
11. If 2 triangles have 2 of their angles
Shalnov [3]
The answer is AA Similarity
6 0
3 years ago
4. Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number. The
a_sh-v [17]
4.) The lateral area of a figure is the area of the figure with the exception of the bases.
Given a prism with right triangle bases, the lateral area of the prism is the sum of the areas of the rectangles making up the prism.
This is given by
Lateral area = (8.94)(41) + (4)(41) + (8)(41) = 366.54 + 164 + 328 = 858.54 ≈ 859 m^2

The surface area is the sum of the bases plus the lateral area. The area of a rectangle is given by half base times height.
Surface area = 1/2 x 8 x 4 + 1/2 x 8 x 4 + 859 = 16 + 16 + 859 = 891 m^2

5.) The surface area of a cylinder is given by pi r^2h where r is the radius = 12 inches and h is the height = 17 inches.
Surface area = π x (12)^2 x 17 = 2,448π = 7,690.62 in^2 ≈ 7,691 in^2
3 0
2 years ago
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