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
ololo11 [35]
4 years ago
5

collect data (in decibels) of 10 different things in term of loudness. Arrange the data in ascending order & find mean, medi

an & mode for the same.
Mathematics
1 answer:
ss7ja [257]4 years ago
6 0
Whisper-20dB
Quiet Residence-30dB
Soft stereo in Residence-40dB
Average Speech-60dB
Cafeteria-80dB
Pneumatic Jackhammer-90dB
Loud crowd noise-100dB
Accelerating Bike-100dB
Rock concert-120dB
Jet Engine (75 ft away)-140dB

(1)Mode=100dB (since 100 is occurring the maximum no. of times, i.e. it has the highest frequency of 2)
(2)Mean=sum of observations/Total number of observations
=(20+30+40+60+80+90+100+100+120+140)/10
=770/10=10dB
(3)Median= 1/2[{n/2}th observation + {(n/2)+1}th observation], where, n=total no. of observations
So, 1/2[{10/2}th observation + {(10/2)+1}th observation]
=1/2[5th observation+6th observation]
=1/2[80+90]                    [Because:5th observation=80dB and 6th=90dB]
=1/2(170)
=85
Therefore, median=85dB

You might be interested in
1. Matt painted of his room with of a gallon of paint. How much
Solnce55 [7]

Answer: Around two gallon cans

Step-by-step explanation:  One gallon can of paint covers up to 400 square feet, which is enough to cover a small room, like a bathroom. Two gallon cans of paint cover up to 800 square feet, which is enough to cover an average size room.

4 0
3 years ago
Hey guys ( or gals ) I have no idea what to do please help me.
shepuryov [24]

Answer:

Irrational numbers cannot be written as a fraction, or the ratio of two whole numbers.

You would have to find a GCF (greatest common factor) and multiply it out of the radical.

ex.

\sqrt{6} = 2 x 2 x 2

when you have to multiplier numbers then you can combine two of them to take outside the radical, meaning 2x2x2

2\sqrt{2\\}

so \sqrt{6} would be closest to the positive 2 on the number line and 2 notches.

\sqrt{11}

is an irrational number, so it might fall into 3.3 if turned into a decimal.

Step-by-step explanation:

8 0
3 years ago
Jenny bought 4 DVD's for $25.20. What was the unit rate?
alukav5142 [94]

I think its 6.3........

5 0
3 years ago
Read 2 more answers
polynomial function of degree 4 with -1 as a zero of multiplicity 3 and 0 as a zero of multiplicity 1
iren [92.7K]
\bf \begin{cases}
x=-1\implies &x+1=0\\
x=0\implies &x=0
\end{cases}
\\\\\\
\stackrel{\textit{multiplicity of 3}}{(x+1)^3}~~\stackrel{\textit{multiplicity of 1}}{(x)^1}=\stackrel{original~polynomial}{0}
\\\\\\
(x^3+3x^2+3x+1)(x)=\stackrel{y}{0}\implies x^4+3x^3+3x^2+x=y
6 0
3 years ago
Find for x , please its a emergency!!!
Igoryamba

Answer:

45

Step-by-step explanation:

the left and right side are symetrical

7 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following expressions is written in scientific notation? (math)
    10·2 answers
  • Help me please 7−s/2>3
    13·2 answers
  • Evaluate the expression given value of the variables 17 - 2c for c = 7
    9·1 answer
  • What is log5 (x) + 4 * log5 (y) - 2* log5 (z) simplified?
    5·1 answer
  • 3x+6x+4=14x-6 what Is x?
    15·1 answer
  • Plz help me with this I have no idea what to do
    5·1 answer
  • Which line shows the first error in the solution?
    7·1 answer
  • Complete the real-world situation that could be modeled by the equation 140 - 8x = 180 - 12x . Xavier has $140 in his lunch acco
    13·1 answer
  • 8. If ADGH - ADEF, find the value of x.<br> Help ASAP please
    9·2 answers
  • Given b(x)= (-3,7), state what the coordinates of this point will be of the following transformations are effected: 2b(x)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!