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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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Please help me on this TIA!!
tamaranim1 [39]
50.24 hope it helps:)
8 0
2 years ago
The circumference of the great wheel was twelve thousand and forty-one thousand inches. The cricumference of the lesser wheel wa
Korvikt [17]

Answer:

The larger wheel is 10979.04098 more than the smaller wheel.

Step-by-step explanation:

Given that,

The circumference of the great wheel was twelve thousand and forty-one thousandth inches.

C = 12000.041 inches

The circumference of the lesser wheel was only one thousand twenty-one and two hundred-thousand inches.

C' = 1021.00002 inches

We need to find how much larger was the great wheel. To find it, take the difference of C and C'.

C-C' = 12000.041 inches - 1021.00002 inches

= 10979.04098 inches

Hence, the larger wheel is 10979.04098 more than the smaller wheel.

5 0
3 years ago
The product of 9, and a number increased by 7, is 126. What is the number
RoseWind [281]

Answer:

The number is 7.

Step-by-step explanation:

The unknown number: x

9 (x + 7) = 126

Using the distributive property, 9x + 63 = 126

9x = 63

x = 7

6 0
3 years ago
A consistent system of equations is a system with __________.
mr_godi [17]

D. Intersecting lines and lines that have the same equation.

Hope this helps :)

4 0
3 years ago
Identify the center and the radius of each.<br><br> x^+y^+26x-22y+281=0
inessss [21]

Answer:

Center (-13,11) , radius 3

Step-by-step explanation:

The given circle has equation

x^2+y^2+26x-22y+281=0

We compare this to the general equation.

x^2+y^2+2ax+2by+c=0

where (-a,-b) is the center.

This implies that;

2a=26

\Rightarrow a=13

2b=-22

b=-11

The center is therefore (-13,11)

The radius is given by

r=\sqrt{a^2+b^2-c}

r=\sqrt{13^2+(-11)^2-281}

r=\sqrt{9}

The radius is 3

3 0
3 years ago
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