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Snezhnost [94]
2 years ago
14

FIRST PERSON TO ANSWER GETS BRAINIEST ANSWER SO HURRY QUICK QUICK FIRST PERSON TO ANSWER GETS BRAINIEST ANSWER SO HURRY QUICK QU

ICK FIRST PERSON TO ANSWER
GETS BRAINIEST ANSWER SO HURRY QUICK QUICK

The actual length of c in the triangle shown is 15 cm.

Use the scale drawing of the triangle to find the actual length of side a.

A)0.1536 cm

B)9.375 cm

C)11.72 cm

D)15.26 cm

Mathematics
1 answer:
Zielflug [23.3K]2 years ago
3 0
1.92 cm = 15 cm
1.2 cm   =   ?  cm

\frac{15}{1.92} = \frac{?}{1.2}

15*1.2 = 1.92*?
18 = 1.92*?
9.375 = ?

The answer is B


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Answer:

z(s)  is in the rejection zone , therefore we reject H₀

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We have a prortion test.

P₀  =  37 %         P₀  = 0,37

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One tail-test  (right tail) our case is to show if sample give enough information to determine if proportion of individual who attended college is higher than the proportion found by Harper´s index.

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H₀      null hypothesis                        P₀  =  0,37

Hₐ  alternative hypothesis                P₀  >  0,37

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3.-Compute of z(s)

z(s)  =  [  P  -  P₀  ]  /√(P₀Q₀/n) ]  

z(s)  =  [ (  0,47  -  0,37  ) /  √0.37*0,63/100

z(s)  = 0,1 /√0,2331/100     ⇒   z(s)  = 0,1 /0,048

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z(s) > z(c)        2.08  > 1.64

5.-Decision:

z(s)  is in the rejection zone , therefore we reject H₀

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