Consider population data with μ = 40 and σ = 4.(A) Compute the coefficient of variation(B) Compute an 88.9% Chebyshev interval around the population mean. ​What is the upper and lower limit?
Answer:
The answer is "[tex]10 \% ,\text{upper limit}=52,\ and \ \text{lower limit}=28[/tex]"
Step-by-step explanation:
Given value:
[tex]\mu =40\\\\\sigma=4[/tex]
In point a:
Calculating the value of the coefficient of variation:
[tex]\to C.V= \frac{6}{\mu} \times 100 \%\\\\ \to C.V= \frac{4}{\mu} \times 100 \% \\\\ \to C.V = 10 \%[/tex]
In point B:
when 88.9 \% of the value are lies then :
[tex]\to \mu \pm 36\\\\\to \mu -36 = 40-3\times 4 = 40 -12 =28\\\\\to \mu +36 = 40+3\times 4 = 40 +12 =52[/tex]
[tex]\text{upper limit}=52\\\\\text{lower limit}=28[/tex]
Which of the following expressions is a monomial?
x-2
y4 - x3
4 - a
5c3
Answer:
5[tex]c^{3}[/tex]
Step-by-step explanation:
A monomial is an "expression" containing one element. It can be operations such as multiplication or division (or exponents, exponents are technically multiplication). A monomial cannot have addition or subtraction.
Answer:
it is 5c3 because it have one term
Solve the following equation for x.
−13−4x−13x=−14+15x
Answer:
x = 0.84375
Step-by-step explanation:
-13 - 4x - 13x = 14 + 15x
-13 - 17x = 14 + 15x
-13 - 17x + 17x = 14 + 15x + 17x
-13 = 14 + 32x
-13 - 14 = 32x
-27 = 32x
-27 / -32 = 32x / 32
0.84375 = x
Hope this helps!
500 sixth-grade students were surveyed. Of these students that were surveyed 375 had been to a baseball game, 270 own either a catcor a dog, 125 had traveled on an airplane. What is the ratio of sixth-grade students who traveled on an airplane to the total number of sixth-grade students surveyed?
Elton played in a four day golf tournament using the table below what is his final score for the tournament
Answer:
sshbsjbssbjssjnsjs
Step-by-step explanation:
Answer:
-8
Step-by-step explanation:
-6-3+2-1=-8
Help me please, thanks.
-Tornado
Answer:
[tex]x = - \frac{25}{3} [/tex]
Step-by-step explanation:
[tex] \frac{10}{3} = \frac{x}{( - \frac{5}{2}) } [/tex]
i) simplify the complex fraction[tex] \frac{10}{3} = - \frac{2x}{5} [/tex]
ii) simplify the equation using cross multiplication[tex]5(10) = - 2x(3)[/tex]
[tex]50 = - 6x[/tex]
iii) swap the sides of the equation[tex] - 6x = 50[/tex]
iv) divide both sides of the equation by -6[tex] \frac{ - 6x}{ - 6} = \frac{50}{ - 6} [/tex]
[tex]x = - \frac{50}{6} [/tex]
v) simplify the fraction[tex]x = - \frac{25}{3} [/tex]
I don’t understand pls help
Answer:
one solution is the correct answer
help please thanks very much
Answer:
the right answer is 18 because 120 divided by 20 is 6 so the you do 6 times 3
Answer:
the answer is 18
Step-by-step explanation:
20:3=workers:casiers
120:x
cross multiply so that means 3 multiplied by 120 which is 360 divided by 20 which is 18
hope this helps :)
PLS HELP I WILL GIVE BRAINLIEST TO THE FIRST CORRECT ANSWER!!!
In the following lattice bridge, AABC - AECD. The ratio of the
lengths of the corresponding sides in AABC to AECD is 3:4. If
AB=9 meters, what is EC?
- A) 6 m
- B) 9 m
- C) 12 m
- D) 15 m
Answer:
C or D
dont get me wrong here im the wrong bc this is bassicly taking ur points but it c i think but d is still a good opition I think c
Economists are studying your local housing market to see whether mortgage approval rates impact home prices. They collect data on mortgage approval rates in your area and compare them with local housing prices. In this experiment, what are the variables measures? A. Mortgage approval rates and discrimination B. Housing prices and income. C. Mortgage approval rates and income. D. Mortgage approval rates and housing prices
Answer:
D. Mortgage approval rates and housing prices
Step-by-step explanation:
From the study being conducted by the economist, the two variables in their study happens to be the Mortgage approval rates and the housing prices. This is because, the local housing market is influenced by those two.
The higher the value of one variable, it may have a direct or indirect influence on the value of the other variable. To determine the relationship between the two means it need to be investigated.
Could someone help bc I don’t know
Answer:
A. 56 is greater than 37
B. -1 is less than 2
C. -5 is less than 0
D. -4 is greater than -5
E. -6.0 is equal to -6
Step-by-step explanation:
These are the answers because:
1) When we are comaparing positive numbers, the greater the number, the higher value it has, however, when we are comparing negative numbers, the higher the number, the less value it has.
Hope this helps! :D
846.27 divided by 0.22
The area of the triangle below is 33.12 square inches. What is the length of the base?
Answer:
Step-by-step explanation:
12.72
A map shows a town with a area of 3.5 square inches. if the map has a scale of 1 inch : 4 miles, what is the actual area of the town?
Answer:
14 sq. mi.
Step-by-step explanation:
Based on the scale we can see that for every inch there are an actual 4 miles in the town. Therefore, this is 4 times the model version meaning that if the model's area is calculated as 3.5 square inches then we can multiply this by 4 to get the actual area of the town.
3.5 sq. in. * 4 = 14 sq. miles
Finally, we can see that the area of the town is 14 sq. mi.
Answer:
56
Step-by-step explanation:
56 it’s for Acellus
. Elvira has 3 caps: one red, one green,
and one blue. She also has two green T-shirts, one blue T-shirt
and 3 black T-shirts. Elvira considers it a faux pas to ever be seen wearing blue and green at the same
time. What is the probability that Elvira will commit a fashion faux pas, if she randomly reaches into
her dresser and selects a cap and a T-shirt?
Please help me
Answer:
1/6Step-by-step explanation:
There are 3 caps and 6 T-shirts
Probability of blue cap and green T-shirt is:
1/3*2/6 = 1/3*1/3 = 1/9Probability of green cap and blue T-shirt is:
1/3*1/6 = 1/18Probability of fashion faux:
1/9 + 1/18 = 3/18 = 1/6In a country that only wants girls, every family continues to have children until they have a girl. If they have a boy, they have another child. If they have a girl, they stop. What is the proportion of boys to girls in the country
Complete Question
In a country in which people only want Girls, every family continues to have children until they have a Girl. If they have Girl, they stop. If they have boy, they will continuous have child. Assuming that the birthrate of Girl is 52%, what is the proportion of Girl in the country?
Answer:
0.52
Step-by-step explanation:
From the question we are told that
52% is the birthrate of Girls
Therefore
[tex]\frac{52}{100} =0.52[/tex]
0.52 is the proportion of Girls to boys in that country
PLEASE PLEASE HELP!!!!
Answer:
4
Step-by-step explanation:
Which expressions are equivalent to 6a(5+d) ?
SELECT EACH CORRECT ANSWER (theres more than 1)
30a+6ad
(6a⋅5)+(6a⋅d)
11a + d
30a+(6a⋅d)
30ad
Answer:
first, second and fourth
Step-by-step explanation:
If you use distribution,
6a(5+d) is the same as
6a(5) + 6a(d)
Multiplied = 30a + 6ad
So it's the 1st 2nd and fourth choice.
1st is stated above when multiplied out and combined.
2nd is after distribution.
4th choice is basically combination of 1 and 2 where one is combined (first term) and the second one just set up to be multiplied.
It cannot be third because you are multiplying the factors and not adding so you cannot have 11a.
It cannot be last choice because you have different types of terms that cannot be combined (one with a alone and one with ad)
Answer:
(6a*5) + (6a*d)
30a + 6ad
30a + (6a*d)
Step-by-step explanation:
Hope you ace your test!
plzz help il give the crown thingys
Steve worked 7 hours Monday, 5 ¾ hours on Tuesday and 3.2 hours on Friday. If Steve earns $8.50 per hour, how much money did he earn for these three days?
Answer:
135.58 just did this
Step-by-step explanation:
First, I calculated the amount of money he got on Monday. I multiplied. 8.50 x 7 which equals 59.50. Then, I calculated the amount of money he got on Tuesday. I multiplied 8.50 (since that is the number of money he gets paid) to 3.2 (since that’s the amount of hours he works). I got 27.200. Then lastly, I calculated the amount of money he got on Friday. So first I changed 5 3/4 into a decimal. This is 5.75. After, I multiplied 8.50 x 5.75, and got 48.8750.lastly, I added and got 135.575. So if you round it, it will be 135.58
Helppp me pleaseeeeeee
Answer:
where is ur question bro?
Answer:
what is your doubt
question??
There is a bag with 10 balls inside it. 2
are footballs, 3 are soccer balls, 1 is a
softball, 2 are baseballs, and 2 are
basketballs. If you were to reach in and
grab one ball, what is the probability
that it is a softball or not a basketball?
Enter your answer in simplest form.
P(softball or not a basketball)=
The probability of grabbing a ball that is either a softball or not a basketball is 9/10, or 0.9 when expressed as a decimal.
What is probability?The likelihood or chance of an event occurring is measured by probability. Usually, it is stated as a number between 0 and 1, where 0 denotes an event's impossibility and 1 denotes its certainty.
According to question:There are 10 balls in total, and 2 of them are basketballs. So the number of balls that are not basketballs is 10 - 2 = 8.
Of these 8 balls, we know that 1 is a softball. So the number of balls that are either a softball or not a basketball is 1 + 8 = 9.
Therefore, the probability of grabbing a ball that is either a softball or not a basketball is:
P(softball or not a basketball) = 9/10
So the probability of grabbing a ball that is either a softball or not a basketball is 9/10, or 0.9 when expressed as a decimal.
To know more about probability visit:
https://brainly.com/question/29221515
#SPJ1
4x−3y=8
4x−y=−8
work out x and y
Answer:
y = -8
x = -4
okay i hope you got it
You are using an exponential smoothing model for forecasting. The running sum of the forecast error statistics (RSFE) is calculated each time a forecast is generated. You find the last RSFE to be 34. Originally, the forecasting model used was selected because of its relatively low MAD of 0.4. To determine when it is time to re-evaluate the usefulness of the exponential smoothing model, you compute tracking signals. Which of the following is the resulting tracking signal?A) 85B) 60C) 13.6D) 12.9E) 8
Answer:
A)85
Step-by-step explanation:
Calculation for the resulting tracking signal
Using this formula
Tracking signal= Last forecast error statistics (RSFE) /Low MAD (Mean Absolute Deviation)
Let plug in the formula
Tracking signal=34/0.4
Tracking signal=85
Therefore the resulting tracking signal will be 85
In a sample of 41 water specimens taken from a construction site, 23 contained detectable levels of lead.
A 95% confidence interval for the proportion of water specimens that contain detectable levels of lead is 0.409
Answer:
drippy pen iss
Step-by-step explanation:
Michelle purchases a pair of jeans for $35 and a dress for $47. The store charges 8% sales tax on all purchases. How much will Michelle need to pay for her purchase, including tax?
Answer:
Michelle needs to pay $88.56 to pay for her purchase, including tax.
Step-by-step explanation:
The purchasing cost of a pair of jeans = $35
The purchasing cost of dress = $47
The total purchase cost = $35 + $47
= $82
Given that the store charges 8% sales tax on all purchases.
Thus,
Tax amount = 8% × 82
= 8/100 × 82
= 0.08 × 82
= 6.56
The total cost including the tax = Tax amount + The total purchase cost
= 6.56 + 82
= $88.56
Therefore, Michelle needs to pay $88.56 to pay for her purchase, including tax.
Can someone please help me ....An average American throws away 4 to 5 pounds of waste each day. Make an estimate of the number of pounds of waste that is produced in a typical month by each household, if a typical household has 2 to 3 people?
I have been on this problem for 20 minutes!! help!!
Answer:
I THINK Vertical ( I'm not positive) Goodluck
Answer:
B) Decreasing
It getting smaller every time
Find the general solution of the given differential equation.y^(4)+18y"+81y=0
Answer:
The general solution of the given differential equation
[tex]y = ( c_{1} + c_{2} x ) cos3 x + ( c_{3} +c_{4} x) sin3 x[/tex]
Step-by-step explanation:
Step(I):-
Given differential equation
y⁴+18y"+81y=0
⇒ (D⁴+18D²+81)y =0
The auxiliary equation
[tex]m^4+18m^2+81 =0[/tex]
[tex](m^2)^{2} + 2 (9) m^{2} +(9)^2 = 0[/tex]
we will use formula ( a + b)² = a² + 2 a b + b²
⇒ ( m² + 9 ) ² = 0
⇒ ( m² + 9 ) ( m² + 9 ) = 0
[tex]m^{2} =-9\\m= - 3i and m=3i[/tex]
m² + 9 = 0
[tex]m² = -9\\m= -3i and m=3i[/tex]
The complex roots are 0± 3 i ,0 ± 3 i
Step(ii):-
The complementary function
[tex]y = e^{\alpha x } ( c_{1} + c_{2} x ) cos\beta x + ( c_{3} +c_{4} x) sin\beta x[/tex]
The general solution of the given differential equation
[tex]y = e^{0 x } ( c_{1} + c_{2} x ) cos3 x + ( c_{3} +c_{4} x) sin3 x[/tex]
The general solution of the given differential equation
[tex]y = ( c_{1} + c_{2} x ) cos3 x + ( c_{3} +c_{4} x) sin3 x[/tex]
determine the number of terms in each algebraic expression (6a+9)-7b
Answer:
3
Step-by-step explanation:
(6a+9)-7b
There are 3 terms
Answer:
There are three terms, which means it is trinomial expression.
the first term is 6a
the second term is 9 and
the third term is -7b
Could someone help?
Answer:
you would end up with -7
Step-by-step explanation:
do you need an explanation?