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77julia77 [94]
3 years ago
8

I need help please help me asap!

Mathematics
1 answer:
Tju [1.3M]3 years ago
4 0
Here is the formula:

d=C/\pi
Dividing fractions is the same as multiplying the reciprocal, but inorder to multiply fractions you need to convert the mixed number to an improper fraction. so .....
Formula for mixed numbers to improper fraction is:

(whole number*denominator)+numerator and you put your answer over the denomiator.

Solving everything 
37 5/7 = 264/7

264/7*7/22 (reciprocal of 22/7)=
1848/154=
12

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In a random sample of n1 = 162 males, there are x1 = 63 people that have blue eyes. In a random sample of n2 = 333 females, ther
sesenic [268]

Answer:

z = 2.1784 > 1.96,

Reject the null hypothesis

Step-by-step explanation:

For the males:

n1  = 162, x1 = 63

P1 = x 1/ n1 = 0.3889

For the Females:

n2 = 333,

x2 = 97

P 2 = x2/n2

= 0.2913

P 1= P2 Null hypothesis

P 1 is not equal to P 2 alternative hypothesis

Pooled proportion:

P= (x1 + x2) /( n1+ n2)

= (63 + 97) / (162 + 333)= 0.3232

Test statistics :

Z= (p1 - p2) /√p(1-p)× (1/n1 + 1/n2)

0.3889- 0.2913 / √0.3232 × 0.6768 × (1/162 +1/333)

=2.1784

c) Critical value :

Two tailed critical value, z critical = Norm.S .INV (0.05/2) = 1.960

Reject H o if z < -1.96 or if z > 1.96

d) Decision:

z = 2.1784 > 1.96,

Reject the null hypothesis

7 0
3 years ago
Satin ribbon is sold for
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Answer:

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Step-by-step explanation:

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3 years ago
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The answer is A. Battery

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We now want to solve for x.
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-4x=-12

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7 0
3 years ago
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