1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex17521 [72]
3 years ago
5

An airport is studying the noise levels of jets during takeoff as they pass over a neighborhood. They find that at the present t

ime, the mean noise level is 103 decibels and the standard deviation is 5.4 decibels. The distribution of noise levels for all jets during takeoff over the neighborhood has a normal distribution. What percent of these jets have a noise level less than 92.2 decibels when taking off over this neighborhood
Mathematics
1 answer:
avanturin [10]3 years ago
6 0

Answer:  2.28%

Step-by-step explanation:

Given: An airport find that at the present time, the mean noise level is 103 decibels and the standard deviation is 5.4 decibels.

The distribution of noise levels(x) for all jets during takeoff over the neighborhood has a normal distribution.

The probability that jets have a noise level less than 92.2 decibels when taking off over this neighborhood will be :-

P(X

Hence, the percent of these jets have a noise level less than 92.2 decibels when taking off over this neighborhood = 2.28%

You might be interested in
Points S, L, and P on this grid represent the locations of the school, the library, and the park, respectively.
agasfer [191]

Using the distance formula, the distance from:

School to Library (SL) = 5 units.

Library to Park (LP) = 10 units.

<h3>What is the Distance Formula?</h3>

To calculate the distance between two points on a coordinate plane, the distance formula used is: d = \sqrt{(y_2 - y_1)^2 + (x_2 - x_1)^2}.

Given the coordinates of each location as:

  • School, S = (0, 4)
  • Library, L = (4, 1)
  • Park, P = (-4, -5)

Distance from School to Library (SL):

SL = √[(4−0)² + (1−4)²]

SL = √[(4)² + (−3)²]

SL = √25

SL = 5 units

Distance from Library to Park (LP):

LP = √[(4−(−4))² + (1−(−5))²]

LP = √[(8)² + (6)²]

LP = √100

LP = 10 units

Learn more about the distance formula on:

brainly.com/question/661229

#SPJ1

7 0
1 year ago
You are dealt five cards from a standard and shuffled deck of playing cards. Note that a standard deck has 52 cards and four of
Gre4nikov [31]

Answer:

((4 choose 3)·(48 choose 2) + (4 choose 4)·(48 choose 1)) / (52 choose 5) = 19/10829 = 0.0018

8 0
3 years ago
The volume of a cylinder is 252π252π cm3 and its height is 7 cm.
kirill [66]
V = (pi) * r^2 * h
h = 7
V = 252(pi)

252(pi) = r^2 * 7
252(pi) / 7 = r^2
36(pi) = r^2
sqrt 36(pi) = r
6 = r <==== radius is 6 cm
8 0
3 years ago
Help pls I will give 20 points
dalvyx [7]

Answer:

neon-0

oxide- -2

copper-2

tin-0

4 0
3 years ago
One teacher wants to give each student 7 over 9 of a slice of pizza. If the teacher has 7 slices of pizza, then how many student
Anna007 [38]
Total = 7 slices.
1student = 7/9 of a slice.

Total number of students:

7 \div  \dfrac{7}{9} 

= 7 \times  \dfrac{9}{7}

= 9

---------------------------------------------------------------------------
Answer: She will be able to hand out to 9 students.
---------------------------------------------------------------------------
3 0
3 years ago
Other questions:
  • Adam was making some brownies and cupcakes for his school fundraiser. If the brownies
    6·1 answer
  • The table below shows the number of marbles of different colors in a bag:
    14·2 answers
  • - If 2x2 + 8y = 121.5 and x2 - 8y = 121.5, then x =<br> 9<br> 6.36<br> 16<br> 7
    10·1 answer
  • The question is :
    6·1 answer
  • A random card is drawn from a full deck of 52 cards. What is the probability that a card drawn is one of the 4 queens in the dec
    8·1 answer
  • if the pattern below follows the rule "starting with 10,every consecutive line has a number one less than the previous line." ho
    5·1 answer
  • Given: sin θ = 0.8660 hypotenuse = 0.25 Find: θ = (please explain).
    15·2 answers
  • A snowstorm lasted for three days. During the storm, 8 inches of snow fell on the first day, 6 inches of snow fell on the second
    6·1 answer
  • On a typical long distance call you talk for 30 minutes. On a typical local call you talk for 10 minutes. Your phone company off
    13·1 answer
  • I need help with my math
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!