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GuDViN [60]
2 years ago
12

Statisticians for a roadside assistance company interviewed 50,000 randomly selected United States (US) households. Of those, 15

,595 reported that they had traveled 50 or more miles from home between December 23 and January 4. If there are 115,000,000 US households, approximately how many of them do the interviews suggest traveled 50 or more miles from home at that time?
Mathematics
1 answer:
I am Lyosha [343]2 years ago
8 0

Answer:

35,868,500 people

Step-by-step explanation:

#We calculate the probability of those who traveled 50+ miles.

-Probability is the likelihood of success. n=50000, p=15595:

P(X\geq 50)=\frac{15595}{50000}\\\\=0.3119

-The US population is 115000000. We determine what fraction of the actual population traveled 50+ miles:

E(X)=np, N=115000000,p=0.3119\\\\=0.3119\times 115000000\\\\\\=35868500

Hence, 35,868,500 people traveled 50+ miles.

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WITCHER [35]
First lets get 3% into decimal form. 

3% is 3/100  = 0.03

Now multiply 0.03 by 47000 to get how much extra money she was going to get. 

47000 * 0.03 = 1410

Now we just add
47000 + 1410 = 48410 is what she was going to make in 2012

Another way to do this is 

(47000)(1+0.03) = 48410

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4 0
2 years ago
Isabella Is building a tree fort .The base of the fort is 78 inches wide by 92 inches long. What is the area of the base in squa
Maslowich

Answer:

Part a) The area of the base is 7,176\ in^{2}

Part b) The area of the base is 49\frac{5}{6}\ ft^{2}

Step-by-step explanation:

we know that

The area of a rectangle is equal to

A=LW

Part a)

we have

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substitute

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Part b)

we know that

1\ ft=12\ in

Convert inches to feet

92\ in=92/12\ ft

78\ in=78/12=6.5\ ft

substitute in the formula

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Convert to mixed number

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2 years ago
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Maybe is 2181 the biggest 
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Answer:

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Step-by-step explanation:

4x + 5 = 3x + 4

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4x =    3x -1

-3x =   -3x

1x = -1

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4 0
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