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
Alexandra [31]
3 years ago
12

The average number of newspapers for sale in an airport stand is 15. SD is 6. The average age of the pilots is 36 and SD is 4. W

hich data set is more consistent? What coefficient you need to use to answer this question?
Mathematics
1 answer:
balu736 [363]3 years ago
4 0

Answer:

The average age of pilots has a lower coefficient of variation, so it is the most consistent data set.

Step-by-step explanation:

The coefficient of variation is used to measure consistency of a data set. It is the standard deviation divided by the mean. The higher the coefficient of variation, the more variable, that is, the least consistent the data set is.

The average number of newspapers for sale in an airport stand is 15. SD is 6.

The consistency is:

C = \frac{6}{15} = 0.4

The average age of the pilots is 36 and SD is 4.

The consistency is:

C = \frac{4}{36} = 0.11

The average age of pilots has a lower coefficient of variation, so it is the most consistent data set.

You might be interested in
which of the following words is the most appropriate to fill in the blank? a. bisectorb. linec. sloped. transversal
Serhud [2]

This construction demonstrate that the set of points equidistance from the endpoints of a line segment is the perpendicular bisector of the segment

4 0
1 year ago
What is 2 2/3 dividend by 2/3
Llana [10]
4 is the answer to that
7 0
2 years ago
Read 2 more answers
What number needs to be added to 4 and 7 so that the ratio of
il63 [147K]

Answer:

a.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Calc 3 iiiiiiiiiiiiiiiiiiiiiiiiiiii
Lilit [14]

Take the Laplace transform of both sides:

L[y'' - 4y' + 8y] = L[δ(t - 1)]

I'll denote the Laplace transform of y = y(t) by Y = Y(s). Solve for Y :

(s²Y - s y(0) - y'(0)) - 4 (sY - y(0)) + 8Y = exp(-s) L[δ(t)]

s²Y - 4sY + 8Y = exp(-s)

(s² - 4s + 8) Y = exp(-s)

Y = exp(-s) / (s² - 4s + 8)

and complete the square in the denominator,

Y = exp(-s) / ((s - 2)^2 + 4)

Recall that

L⁻¹[F(s - c)] = exp(ct) f(t)

In order to apply this property, we multiply Y by exp(2)/exp(2), so that

Y = exp(-2) • exp(-s) exp(2) / ((s - 2)² + 4)

Y = exp(-2) • exp(-s + 2) / ((s - 2)² + 4)

Y = exp(-2) • exp(-(s - 2)) / ((s - 2)² + 4)

Then taking the inverse transform, we have

L⁻¹[Y] = exp(-2) L⁻¹[exp(-(s - 2)) / ((s - 2)² + 4)]

L⁻¹[Y] = exp(-2) exp(2t) L⁻¹[exp(-s) / (s² + 4)]

L⁻¹[Y] = exp(2t - 2) L⁻¹[exp(-s) / (s² + 4)]

Next, we recall another property,

L⁻¹[exp(-cs) F(s)] = u(t - c) f(t - c)

where F is the Laplace transform of f, and u(t) is the unit step function

u(t) = \begin{cases}1 & \text{if }t \ge 0 \\ 0 & \text{if }t < 0\end{cases}

To apply this property, we first identify c = 1 and F(s) = 1/(s² + 4), whose inverse transform is

L⁻¹[F(s)] = 1/2 L⁻¹[2/(s² + 2²)] = 1/2 sin(2t)

Then we find

L⁻¹[Y] = exp(2t - 2) u(t - 1) • 1/2 sin(2 (t - 1))

and so we end up with

y = 1/2 exp(2t - 2) u(t - 1) sin(2t - 2)

7 0
2 years ago
Please help me question is in the picture
tekilochka [14]

Answer:

172.70 sq. ft.

Step-by-step explanation:

The surface area of a circular cone is

SA = \pi r^{2} + \pi rl       r = radius of base         l = slant height

r = 4.4    and     l = 8.1

SA = 3.14 (4.4^{2}) + 3.14(4.4)(8.1)\\

SA = 3.14(19.36) + 111.9096

     = 60.7904 + 111.9096

     = 172.70 sq. ft.

8 0
3 years ago
Other questions:
  • Area of a parallelogram stripe 12high in 63\4 inbase
    6·1 answer
  • Which of the following are exterior angles?
    9·2 answers
  • Jide is n years,his twin sister are two years younger than he is. the sum of their age in years is?
    11·1 answer
  • Please include Work!!!
    13·1 answer
  • Extra Points! Using the following data, calculate the mean absolute deviation: 1 6 5 8 3 7 1 4 10 9 What is the mean absolute de
    10·2 answers
  • Mr. Johnson has a piece of pipe 5 1/3 feet long. He decides to cut it into 3 equal pieces to use in making a railing for his por
    5·1 answer
  • Help needed for this math question.
    7·1 answer
  • Need help solving for relative frequency please!
    9·1 answer
  • Complete the pattern. 64, 32, 16, 8, _, _
    9·2 answers
  • Can you please help? I’m tired and I have to work on this
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!