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
Grace [21]
3 years ago
13

The two-way frequency table below shows data on behavior of students and the use of positive phone calls home as an incentive fo

r behavior for a group of students at Lion's Lane Elementary School.
Complete the following two-way table of column relative frequencies.
(If necessary, round your answers to the nearest hundredth.)

Mathematics
1 answer:
Gemiola [76]3 years ago
5 0

Answer:

Step-by-step explanation:

Hello!

In statistics, the relative frequency is the percentage/ proportion of times a determined event has occurred in a given experiment.

In this exercise you have to calculate the relative frequencies of the observed student's behavior, given that they received positive phone calls as an incentive and the observed student's behavior, given that they didn't receive positive phone calls as an incentive.

If "x" represent the number of observations for the category (Desirable behavior and Undesirable behavior) of interest and "n" the total number of observations in each row (Phone call and No phone call), you can calculate the relative frequencies as: f(x)= x/n

For the students that received the phone call:

n= 19 + 9= 28

The student showed desirable behavior: f(x)= 19 / 28= 0.678= 0.68

The student showed undesirable behavior: f(x)= 9 / 28= 0.678= 0.32

For the students that didn't receive the phone call:

n= 8 + 6= 14

The student showed desirable behavior: f(x)= 8 / 14= 0.678= 0.57

The student showed undesirable behavior: f(x)= 6 / 14= 0.678= 0.428= 0.43

I hope this helps!

You might be interested in
If 317 + x = 609 then,
diamong [38]

Answer:

E

Step-by-step explanation:

subtract 317 from 609.

7 0
2 years ago
If x+ 1/x=8, find x^2+ 1/x^2​
Paraphin [41]

Dude please give me brainliest please :)
Also here’s the answer

6 0
2 years ago
Solve the system of equations below.<br><br><br> A. <br><br> B. <br><br> C. <br><br> D.
timofeeve [1]

Answer:

  A.  (-7 -2)

Step-by-step explanation:

You can eliminate y by multiplying the first equation by 7 and subtracting 6 times the second equation:

  7(-3x +6y) -6(5x +7y) = 7(9) -6(-49)

  -21x +42y -30x -42y = 63 +294 . . . . eliminate parentheses

  -51x = 357 . . . . . . . . collect terms

  x = -7 . . . . . . . divide by -51. This matches answer choice A.

7 0
2 years ago
Which is the graph of a quadratic equation that has a negative discriminant?
Natasha2012 [34]

Answer:

D

Step-by-step explanation:

A negative discriminant indicates that the quadratic equation has no real roots.

Thus the graph does not touch or intersect the x- axis

The only graph that does not touch or intersect the x- axis is the fourth one

5 0
2 years ago
Read 2 more answers
What is the difference between microeconomics and macroeconomics?
Citrus2011 [14]
The major thing that differentiate microeconomics from macroeconomics is the object of study. Microeconomics refers to the study of economics at individual, group or business level while macroeconomics involves the study of economics on the national scale, that is the study of the economy of a nation. The economics of a nation is the combination of all the individuals, businesses, households, etc in a country. 
4 0
2 years ago
Other questions:
  • HELP PLEASE
    13·2 answers
  • If 14 kilograms of meat will serve 80 people how many pounds will need to serve 120 people
    10·1 answer
  • A three-dimensional object may be built from two-dimensional objects<br> True or false
    6·2 answers
  • The cost of a renting premises is 90% of the total costs of a company. The rental price was reduced 6 times, ceteris parabus. Wh
    6·1 answer
  • Write about a real-life situation that could be described with the expression 1286 +953.
    5·1 answer
  • What is the solution to the system of equations? <br> 2x+4y=12<br> Y=1/2x-3
    6·1 answer
  • Helppppppppppppppppppppppppppppppppppp
    14·1 answer
  • Please answer these question(s)! It has to do with math statistics. I will give you brainliest and thanks! Please answer my othe
    7·1 answer
  • Please help need answer today!!
    12·1 answer
  • 30 POINTS AND BRAINLIST TO GRAPH<br><br>Graph the equation by translating y=|x|. <br><br>y=|x+5|
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!