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kozerog [31]
3 years ago
7

Help me please.

Mathematics
1 answer:
laila [671]3 years ago
7 0
Disagree, the fractions are unequal and 10/15=66% while 15/20=75%
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According to a study conducted by an​ organization, the proportion of Americans who were afraid to fly in 2006 was 0.10. A rando
jeyben [28]

Answer:

Event is not unusual(p>0.05).

Step-by-step explanation:

Given that :

p=0.10\\\\n=1100\\\\x=121

#The sample proportion is calculated as:

\hat p=\frac{x}{n}\\\\=\frac{121}{1100}\\\\=0.1100

#Mathematically, the z-value is the value decreased by the mean then divided  the standard deviation :

z=\frac{\hat p- p}{\sqrt{\frac{p(1-p)}{n}}}\\\\\\\\=\frac{0.11-0.10}{\sqrt{\frac{0.10(1-0.10)}{1100}}}\\\\\\=1.1055

#We use the normal probability table to determine the corresponding probability;

P(X\geq 121)=P(Z>1.1055)\\\\=0.1314

Hence, the probaility is more than 0.05, thus the event not unusual  and thus  this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.

8 0
2 years ago
Find valuable asked for witch ABCD must be a parallelogram, <br> 1<br> 11<br> 2<br> 15
riadik2000 [5.3K]

4x+7 = x+10   parallel sides have to be equal in a parallelogram

subtract x

3x +7 = 10

subtract 7 from each side

3x =3

divide by 3

x =1


4 0
3 years ago
A pair of parallel lines is cut by another pair of parallel lines as shown in the figure. Which angles are congruent to angle K?
noname [10]

Answer:

B. angles M, E, and C.

Step-by-step explanation:

Angles are congruent by being corresponding angles, or vertical angles, or alternate interior or exterior angles.

Answer:   B. angles M, E, and C.

8 0
3 years ago
Read 2 more answers
Find the slope of the line
natta225 [31]

Answer:

slope = - 1

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 1, 4) and (x₂, y₂ ) = (2, 1)

m = \frac{1-4}{2+1} = \frac{-3}{3} = - 1

4 0
3 years ago
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Witch method can be used to find the area of the composite shape?
Setler79 [48]
No idea because there is no image
6 0
3 years ago
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