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Amanda [17]
2 years ago
11

PLEASE help

Mathematics
1 answer:
astraxan [27]2 years ago
6 0

Answer:

The percentage of people should be seen by the doctor between 13 and

17 minutes is 68% ⇒ 2nd term

Step-by-step explanation:

* Lets explain how to solve the problem

- Wait times at a doctor's office are typically 15 minutes, with a standard

 deviation of 2 minutes

- We want to find the  percentage of people should be seen by the

 doctor between 13 and 17 minutes

* To find the percentage we will find z-score

∵ The rule the z-score is z = (x - μ)/σ , where

# x is the score

# μ is the mean

# σ is the standard deviation

∵ The mean is 15 minutes and standard deviation is 2 minutes

∴ μ = 15 , σ = 2

∵ The people should be seen by the doctor between 13 and

   17 minutes

∵ x = 13 and 17

∴ z = \frac{13-15}{2}=\frac{-2}{2}=-1

∴ z = \frac{17-15}{2}=\frac{2}{2}=1

- Lets use the standard normal distribution table

∵ P(z > -1) = 0.15866

∵ P(z < 1) = 0.84134

∴ P(-1 < z < 1) = 0.84134 - 0.15866 = 0.68268 ≅ 0.68

∵ P(13 < x < 17) = P(-1 < z < 1)

∴ P(13 < x < 17) = 0.68 × 100% = 68%

* The percentage of people should be seen by the doctor between

  13 and 17 minutes is 68%

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Answer:

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Step-by-step explanation:

We have given that vector V has the magnitude of 15

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In vector form 9.641 i+11.49 j

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3 years ago
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jarptica [38.1K]

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Step-by-step explanation:

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2 years ago
Y = -x^2 + 4x<br><br> quadratic formula
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Answer:

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Direction: Opens Down

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Focus:  

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Axis of Symmetry:  

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Directrix:  

y = 17 /4

x              y

0             0

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Step-by-step explanation:

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3 years ago
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AysviL [449]

Answer:

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Step-by-step explanation:

we know that

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5 0
3 years ago
Please help me with this. Please!
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Answer:

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3 years ago
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