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UNO [17]
3 years ago
9

Determine whether the results appear to have statistical? significance, and also determine whether the results appear to have pr

actical significance. In a study of a gender selection method used to increase the likelihood of a baby being born a? girl, 2089 users of the method gave birth to 1027 boys and 1062 girls. There is about aa 23?% chance of getting that many girls if the method had no effect.
Because there is a 23% chance of getting that many girls by? chance, the method has A) has statistical significance B) does not have statistical significance C) has practical significance D) does not have practical significance. A) Most or B) Not many couples would likely use a procedure that raises the likelihood of a girl from the approximately? 50% rate expected by chance to the [what %?] produced by this method, so this method A) has statistical significance B) does not have practical significance C) does not have statistical significance. D) has practical significance.
Mathematics
1 answer:
EastWind [94]3 years ago
3 0

Answer

See attachment below for answer and explanation.

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Answer:

2.5 bottles

Step-by-step explanation:

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5000 ml = 5 l

5/2 = 2.5

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2 years ago
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Law Incorporation [45]

Answer:

  1. $70
  2. y = 25 + 0.9x
  3. $250

Step-by-step explanation:

1. 10% of $50 is $5, so the purchases would come to $50 -5 = $45. Added to the $25 membership fee, the total cost for the year would be

  $45 +25 = $70

2. The member pays $25 even if no purchases are made. Then any purchases are 100% - 10% = 90% of the marked price. So, the total is ...

  y = 25 + 0.90x

3. $25 is 10% of $250, so that is the amount the member would have to purchase to break even on cost.

If you like, you can compare the cost without the membership (x) to the cost with the membership (25+.9x) and see where those costs are equal.

  x = 25 +0.9x . . . . . x is the spending level at which there is no advantage

  0.1x = 25 . . . . . . . . subtract 0.9x

  25/0.1 = x = 250 . . . divide by 0.1

4 0
3 years ago
BRAINLIEST PLEASE HELP np<br> If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1, find (f+g)(x)
raketka [301]

Answer:

\large\boxed{B.\ (f+g)(x)=2x^2+2x-2}

Step-by-step explanation:

f(x)=-x^2+6x-1\\\\g(x)=3x^2-4x-1\\\\(f+g)(x)=f(x)+g(x)\\\\\text{substitute:}\\\\(f+g)(x)=(-x^2+6x-1)+(3x^2-4x-1)\\\\(f+g)(x)=-x^2+6x-1+3x^2-4x-1\qquad\text{combine like terms}\\\\(f+g)(x)=(-x^2+3x^2)+(6x-4x)+(-1-1)\\\\(f+g)(x)=2x^2+2x-2

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iK ITS A TRICKY QUESTION ITS C THOUGH

Step-by-step explanation:

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