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shutvik [7]
2 years ago
9

…………………………………………………………………

Mathematics
1 answer:
horrorfan [7]2 years ago
7 0

do you sell genius brain

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PLEASE help
astraxan [27]

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%

6 0
3 years ago
A dice is tossed 60 times and the number it lands on is
cluponka [151]

Answer:

That is, you'd expect  of the rolls to be 1,  of the rolls to be 2,  of the rolls to be 3, and so on.

Step-by-step explanation:

5 0
3 years ago
Please help!!!!! Nowwww
never [62]

Answer:

It has 1 term and a degree of 4.

Step-by-step explanation:

3j⁴k-2jk³+jk³-2j⁴k+jk³

= 3j⁴k-2j⁴k-2jk³+jk³+jk³

= j⁴k

So, in this expression, there is 1 term, and it has a degree of 4.

8 0
3 years ago
What is the least common multiple of x+4, x-3, and x^2+x-12
Allushta [10]

Answer: daddy???

Step-by-step explanation:

3 0
3 years ago
Solve the equation x+0.7=1-0.2x in two different ways.Then check your answer.
Reptile [31]
I hope this helps you


x+0,2x=1-0,7


1,2x=0,3


x=0,3/1,2


x=1/4


x=0,25
4 0
3 years ago
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