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Vlad1618 [11]
3 years ago
14

A clinical trail tests a method designed to increase the probability of conceving a girl. In the study 280 babies were born, and

252 of them were girls. Use thr sample data to construct a 99%, confidence interveral estimate of the percentage of girls vorn. Baced on the result foes the method appesr to be effective?
Mathematics
1 answer:
Vitek1552 [10]3 years ago
4 0
Here is the answer have a great day
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I need help with this please
Colt1911 [192]

Answer:

56.55600 cm

Step-by-step explanation:

Radius ( r ) = 9 cm

Formula : -

Perimeter ( semi - circle ) = πr + 2r

Perimeter ( semi - circle )

= πr + 2r

= ( 3.142 x 9 ) + ( 2 x 9 )

= 9 ( 3.142 + 2 )

= 9 x 6.284

= 56.55600 cm

3 0
3 years ago
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Two data sets and their mean absolute deviations are shown.
lutik1710 [3]

Answer:

1, spread out from

2, larger

Step-by-step explanation:

8 0
3 years ago
NO LINKS ON TIMER PLEASE HELP THANK YOU Divide and express the quotient as a mixed number in simplest form: 5,852-25 2
Tanzania [10]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
You survey two oak trees across a narrow but deep gorge. The results of your survey are shown below.
andrew11 [14]
For this case what we must do is use the cosine theorem to solve the problem.
 We have then:
 c ^ 2 = a ^ 2 + b ^ 2 - 2abcos (x)

 Where,
 a, b, c: are the sides of the triangle.
 x: is the angle between the sides a and b of the triangle.
 Substituting values we have:
 c ^ 2 = 90 ^ 2 + 75 ^ 2 - 2 (90) (75) cos (85)

 Clearing c we have:
 c =  \sqrt{90 ^ 2 + 75 ^ 2 - 2 (90) (75) cos (85)}
 Answer:
 
option 1
 
c = \sqrt{90 ^ 2 + 75 ^ 2 - 2 (90) (75) cos (85)}
6 0
4 years ago
Calculate the distance between point B (3,-7) and point C (0,8) on the coordinate grid
LUCKY_DIMON [66]

Answer:

Distance= 15.3

Step-by-step explanation:

5 0
3 years ago
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