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crimeas [40]
2 years ago
10

The heights of a large population of ostriches are normally distributed. Which is the closest percentage of these heights that i

s within 3 standard deviations of the mean?
Mathematics
1 answer:
Andreyy892 years ago
5 0

Answer:

The answer is 99.7 percent

Step-by-step explanation:

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Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
On a recent quiz, the class mean was 74 with a standard deviation of 3.7. Calculate the z-score (to 2 decimal places) for a pers
Licemer1 [7]
<h3>Answer:  -0.81</h3>

Work Shown:

z = (x - mu)/sigma

z = (71 - 74)/(3.7)

z = -0.8108  approximately

z = -0.81

7 0
2 years ago
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Aleksandr [31]
The answer is D.
If it rotates around the origin for 2 quadrants then it would have rotated 180 degrees.
5 0
3 years ago
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The sum of two integers is 23 and the positive difference of the same two integers is 13. What is the product of these two integ
Lady_Fox [76]

Answer:

A) 90

Step-by-step explanation:

"The sum of two integers is 23" becomes

a + b = 23

"the positive difference of the same two integers is 13" becomes

a - b = 13        (difference means subtract)

Now solve the system..

a + b = 23

a - b = 13            *use addition or elimination method, since b has opposite coefficients...

2a = 36             ( we add the two equations together)

   a = 18             (divide by 2 on both sides)

Since a = 18,   18 + b = 23, gives us b = 5.     (18 + 5 = 23)

ab = (18)(5) = 90

7 0
3 years ago
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