A company has offices in two different countries. The 125 employees at location A have a mean commute time of 40 minutes and a standard deviation of 15 minutes. The 250 employees at location B have a mean and standard deviation of 35 and 10 minutes, respectively.
Every month, the company takes separate random samples of 20 employees from each location for a survey. Each time, they look at the difference in the mean commute time sampled from each location
Consider the formula: ...
Why is it not appropriate to use this formula for the standard deviation of ...
Choose
A. The samples are not independent of each other.
B. We cannot assume independence for the employees sampled from location A.
C. We cannot assume independence for the employees sampled from location B.
Answer:
B
Step-by-step explanation:
We cannot assume independence for the employees sampled from location A.
It is not appropriate to use this formula for the standard deviation of
A. The samples are not independent of each other.
What is the difference between the sample and the population?The entire group about whom you want to make conclusions is referred to as a population.
The particular group from which you will gather data is known as a sample. The sample size is always smaller than the population as a whole.
We cannot rely on the workers' sampled employees' independence.
Assuming independence based on the 10% condition requires at least 200 employees in the population with a sample size of 20, however, location A only has 125 employees.
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389 / 106
Round off to the nearest whole number
Answer:
4
Step-by-step explanation:
389 / 106 = 3.66981132
Since 6 is more than 4, we round up, so 3 ---> 4
Hope that helps!
-Sabrina
Find the following arc measures
For question 1,3
Answer:
1) arc JL = 127°
arc JML = 233°
3) arc DE = 104°
arc FE = 76°
arc DEF = 180°
arc CFD = 284°
arc DFE = 256°
Step-by-step explanation:
1) arc JL = 127°
arc JML = 360 - 127 = 233°
3) arc DE =104°
arc FE = 180 - 104 = 76°
arc DEF = 180°
arc CFD = 180 + 104 = 284°
arc DFE = 360 - 104 = 256°
The angles arc measures are,
1) arc JL = 127°
arc JML = 233°
3) arc DE = 104°
arc FE = 76°
arc DEF = 180°
arc CFD = 284°
arc DFE = 256°
What is the angle of the circle?An angle of a circle is an angle that is formed between the radii, chords, or tangents of a circle. We saw different types of angles in the Angles section, but in the case of a circle, there, basically, are four types of angles. These are central, inscribed, interior, and exterior angles.
1) arc JL = 127°
arc JML = 360 - 127 = 233°
3) arc DE =104°
arc FE = 180 - 104 = 76°
arc DEF = 180°
arc CFD = 180 + 104 = 284°
arc DFE = 360 - 104 = 256°
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Darcie wants to crochet a minimum of 3 blankets to donate to a homeless shelter. Darcie crochets at a rate of 1/15 blanket per day. She has 60 days until when she wants to donate the blankets, but she also wants to skip crocheting some days so she can volunteer in other ways.
Write an inequality to determine the number of days, s, Darcie can skip crocheting and still meet her goal.
Answer:
Since Darcie wants to crochet a minimum of 3 blankets and she crochets at a rate of 1/5 blanket per day, we can determine how many days she will need to crochet a minimum of 3 blankets following the next steps:
- Finding the number of days needed to crochet one (1) blanket:
\begin{gathered}1=\frac{1}{5}Crochet(Day)\\Crochet(Day)=5*1=5\end{gathered}
1=
5
1
Crochet(Day)
Crochet(Day)=5∗1=5
So, she can crochet 1 blanket every 5 days.
- Finding the number of days needed to crochet three (3) blankets:
If she needs 5 days to crochet 1 blanket, to crochet 3 blankets she will need 15 days because:
\begin{gathered}DaysNeeded=\frac{NumberOfBlankets}{Rate}\\\\DaysNeeded=\frac{3}{\frac{1}{5}}=3*5=15\end{gathered}
DaysNeeded=
Rate
NumberOfBlankets
DaysNeeded=
5
1
3
=3∗5=15
- Writing the inequality
If she has 60 days to crochet a minimum of 3 blankets but she can complete it in 15 days, she can skip crocheting 45 days because:
AvailableDays=60-RequiredDaysAvailableDays=60−RequiredDays
AvailableDays=60-15=45DaysAvailableDays=60−15=45Days
So, the inequality will be:
s\leq 45s≤45
The inequality means that she can skip crocheting a maximum of 45 days since she needs 15 days to crochet a minimum of 3 blankets.
Have a nice day!
12 3/5 x 30 =
tyyyyyy
12 3/5 x 30 = 378
Can I get brainliest?
Answer:
378 is the answers it's not hard
Lisa works at a music store. Last week she sold 6 more than 3 times the number of CDs that she sold this
week. Lisa sold a total of 110 CDs over the two weeks. Find the number of CDs she sold last week and the
number of CDs she sold this week.
Answer:
This week sales = 26
Last week sales = 84
Step-by-step explanation:
Let this week sales = x
Sales last week = 6 + 3x
Sales last week + this week = 110
x + (6 + 3x) = 110
x + 6 + 3x = 110
6 + 4x = 110
4x = 110 - 6
4x = 104
x = 26
This week sales = 26
Last week sales = 6 + 3(26) = 84
What value for x will make the equation true?
−3 ( 7x − 5 ) = 87 + 3x
A. −17/4
B. -3
C. 4
D. 17/3
Answer:
C . 4
Step-by-step explanation:
step 1 : -3 multiply with inside of the ( 7x-5 )
= -21x + 15
step 2 : then it will be 21x + 15 = 87 + 3x
step 3 : switch between the odds into like this
21x - 3x = 87 - 15
step 4 : subtract it all
18x = 72
step 5 : bring 18 to the other side
x = 72/18
step 6 : to find the ans of x is just calculate them
x = 72 ÷ 18
= 4
Or you can do like these ⬇️
-3 ( 7x - 15 ) = 87 + 3x
21x + 15 = 87 + 3x
21x - 3x = 87 - 15
18x = 72
x = 72/18 or 72÷18
x = 4
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Answer:x=3
Step-by-step explanation:
the 3 angles of a triangle equal 180
you add 105 and 46, which equals 151
you subtract 151 from 180 to see what the missing angle is (29)
you would make 6x+11 equal to 29
-subtract 11 from 29= 18
6x/6, 18/6
the answer is 3
hope this helps! :)
Maria who is 6 feet tall stand 20 feet away from the base of a tree she looks up at the top of the tree at 43° angle of elevation what is the approximate height of the tree rounded to the nearest 10th but
Answer:
24.7 feet
Step-by-step explanation:
Maria who is 6 feet tall stands 20 feet away from the base of a tree she looks up at the top of the tree at a 43° angle of elevation.
what is the approximate height of the tree rounded to the nearest 10th?
We solve the above question using the Trigonometric function of Tangent
tan θ = Opposite/Adjacent
θ = Angle of elevation
Adjacent = Distance from the base of the tree = 20 feet
Opposite => Height of the tree = x
θ = 43°
tan 43 = x/ 20 feet
x = tan 43 × 20 feet
x = 18.650301723 feet
Approximately = 18.7 feet
We are told in the question that Maria is 6 feet tall
Therefore, the height of the tree = Maria's height + Height
= 6 feet + 18.7 feet
= 24.7 feet
repost because i forgot the equation
! 20 points !
someone please help me
Answer:
x=(-3/4)-(5y/4)
Step-by-step explanation:
hello again, the answer is x=(-3/4)-(5y/4). solve using system of equations. please give brainliest
Answer:
Infinitely many solutions
Step-by-step explanation:
=> -16x - 20y = 16 => - 4(4x + 5y) = 12
=> 4x + 5y = 12/(-4) => 4x + 5y = -3 .. (1)
=> 8x + 10y = - 6 => 2(4x + 5y) = - 6
=> 4x + 5y = -6/2 => 4x + 5y = - 3 ...(2)
Note that both the equations come out be same on simplification. It means, we are given with only 1 equation that is 4x + 5y = -3, and since there is nothing more about this, equation would give different values of y for infinitely many random values of x.
Thus,
Equation has infinitely many solutions.
Find the area of the isoscelus, full working out x
Answer:
60
Step-by-step explanation:
Use the Pythagorean Theorem to find the height. 13 squared minus 5 squared=144
Square rt= 12
Now use the formula (base times height) divided by 2
(10 x 12)/2
120/2
60
Line l will be graphed on the same coodinate grid. The only solution to the system of linear equations formed by lines k and l is (4/3,0). Whitch equation could represent line l. A y=3/4x B y= x+4/3 C y= -3/4x+1 D y= -3/4x+4
Answer:
C
Step-by-step explanation:
1. Plot each equation + (4/3,0)
I WILL GIVE BRANLEST IF U HELP ME AND FAST CLASS IS ALMOST OVER AND ITS DUE BEFORE CLASS ENDS
Answer:
9,099 9,505
Step-by-step explanation:
Answer:
First one, Second one, third one, fourth one, and last one
Step-by-step explanation:
All of em but the fourth one...
Whitney buys a coffee in a cylindrical cup with a cardboard sleeve so the cup isn’t too hot to hold. If the diameter of the sleeve is 5 inches and the height of the sleeve is 4 inches, what is
the surface area of the cardboard sleeve?
Answer:
102.05 inches squared
Help with math please. Thank you!
Answer:
which one 1st page or 2nd page or both's answer you want
Answer:
Step-by-step explanation:
Being co- interior angle.
Sum of co - interior angle is always 180°.
Hence,angle UTY + angle RWX=180°
328 x 36 Step by step
Answer:11808
Step-by-step: so start by putting the 328 on top of 36 then after multiple 6 by 8 2 and 3 then bring down the answers then do a 0 then multiply 3 by 8 2 and 3 and you get 11808
Why tan(π/4) = 1 can you explain it simply? Also can we use it with cos, cot, sin, sec and cosec? Thanks! please, please dont write random answers it may be reported.
Answer:
1) tan π/4 = 1
2) cos π/4 = 0.7071
3) cot π/4 = 1
4) sin π/4 = 0.7071
5) sec π/4 = 1.4142
6) cosec π/4 = 1.4142
Step-by-step explanation:
Angle π is in radians
But converting to degree, it is;
π = 180˚
Thus; π/4 = 180/4 = 45°
Thus;
1) from calculator; tan π/4 = tan 45° = 1
2) from calculator, cos π/4 = cos 45° = 0.7071
3) cot is equivalent to 1/tan
Thus; cot π/4 = 1/(tan π/4) = 1/tan 45 = 1/1 = 1
4) from calculator, sin π/4 = sin 45° = 0.7071
5) sec in trigonometry is equivalent to 1/cos.
Thus;
sec π/4 = 1/cos π/4 = 1/cos 45° = 1/0.7071 = 1.4142
6) cosec in trigonometry is equivalent to 1/sin
Thus;
cosec π/4 = 1/sin π/4 = 1/sin 45° = 1/0.7071 = 1.4142
simplify 6bab+ 12
bc
What is the radius and diameter of the following circle?
Answer:
Radius = 16cm
Diameter = 32cm
Step-by-step explanation:
The Radius of a circle is half the diameter of the circle. The radius is how far the outside of the circle is from the middle of the circle. To find the Diameter add the radius twice, for example 16+16. Don’t forget your UNIT it is in Centimeters in this case.
The radius is 16
Diamiter is 32
Solve the equation, Write One solution, No solution and Infinitely Many Solution
1. X = X + 10 ________,_________
Answer:
No Solution.
Step-by-step explanation:
x=x+10
x-x=10
0=10
Kara is sorting buttons by length for a craft project.The line plot shows of each button.If kara lines up all the 3/4 inch buttons What would be the total
Required picture attached below :
Answer:
2 1/4 inches
Step-by-step explanation:
From the line plot Given ;
The frequency or number of 3/4 inch button is 3
Therefore, lining up all the 3/4 inch button in the plot, we have :
3/4 + 3/4 + 3/4
(3 + 3 + 3) /4
9 /4
2 1/4 inch
Find the slope of the line graphed
Answer:
the slope of the line is -2
Answer:
a = 2/5 or 0.4 (a is the slope value)
Step-by-step explanation:
y-int=-2
x-int=5
| x-int | / | y-int | = slope
|-2| / |5| = 2/5
PLEASE HELP FAST
What is the volume of this
container?
2 in.
576 in3
6 in.
72 in3
6 in.
8 in.
504 in
648 in?
12 in.
Answer:
i dont see an image
Step-by-step explanation:
Answer:
504in3 (cubed)
Step-by-step explanation:
Please help me with this.. its the last question and I dont get it. its just number 12 please help
Answer:
Lawrence was incorrect.
Step-by-step explanation:
Amy: 2(3x) +2(4x + 3)
= 14x + 6 ✓
Kaye: 3x + 3x + 4x + 3 + 4x + 3
= 14x + 6 ✓
Lawrence: 4(3x) + 2(4x)
= 20x Ø
Sufjan: 6 + 3x + 3x + 4x + 4x
14x + 6 ✓
Find the equation, in slope-intercept form, of a line with a slope of 5/2 which goes through the point (-2, 4).
Answer:
y=5/2x+9
Step-by-step explanation:
y-y1=m(x-x1)
y-4=5/2(x-(-2))
y-4=5/2(x+2)
y=5/2x+10/2+4
y=5/2x+5+4
y=5/2x+9
Find the area of a trapezoid. Help me pls for 13 points
Answer:
Area would be 110
A square pyramid has a base length of 4 inches. The height of each triangular face is 12 inches. What is the surface area of the pyramid?
Answer:
The surface area of the given pyramid is 112 [tex]inches^{2}[/tex].
Step-by-step explanation:
Base length of the pyramid = 4 inches
Area of the base = [tex]length^{2}[/tex]
= [tex]4^{2}[/tex]
= 16
Area of its base = 16 [tex]inches^{2}[/tex]
Area of one of its triangular surface = [tex]\frac{1}{2}[/tex] x base x height
= [tex]\frac{1}{2}[/tex] x 4 x 12
= 2 x 12
= 24 [tex]inches^{2}[/tex]
Area of all its four triangular surfaces = 4 x 24
= 96 [tex]inches^{2}[/tex]
surface area of the pyramid = sum of areas of all its surfaces
= 16 + 96
= 112 [tex]inches^{2}[/tex]
The surface area of the given pyramid is 112 [tex]inches^{2}[/tex].
Missy started with $217 in her bank account. She deposits $25.50 each week and never withdraws any money. What expression can Missy use to determine her account balance after w weeks?
Answer: yep
Step-by-step explanation:
Answer:
217+25.5w
ye thats it
If m∠ABC = 48, what is m∠ABD?
Answer:
if BD the bisector of angle ABC,
then Angle ABD = 1/2 * angle ABC
= 1/2 * 48
= 24
Answer:
24 °
Step-by-step explanation:
m< ABD = m< CBD + m< DBA
= 28 ÷ 2 = 24 °
20 points!!!!
Determine the area of the composite figure to the nearest whole number.
A)
68 in?
B)
87 in2
C)
110 in2
D)
126 in?