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
Svetlanka [38]
3 years ago
11

#1. A research group interested in understanding the effect of listening to classical music on learning mathematics conducted a

study. One hundred students were randomly assigned to one of two groups. The first group listened to classical music as they learned a new lesson. The second group learned the same lesson with no music playing. Both groups were tested on the new material to determine how much they learned. The results for the two groups were compared. What kind of study is this?
A. This is an observational study because students were randomly assigned to groups.

B. This is an observational study because a treatment was applied to both groups.

C. This is an experiment because a treatment was applied to a group.

D. This is an experiment because students were able to choose which group to join.



#3. ......Angie, a student in an advanced statistics course, was given an algebra test and she scored 80%. Is this an accurate predictor of how well students in the algebra class will perform on the test?

A. Yes, because Angie is representative of the population in the algebra class

B. Yes, because Angie scored high on the test so it must be easy

C. No, because Angie is not representative of the population in the algebra class

D. No, because Angie scored too high on the test
Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
4 0
The correct answer to the first situation would be letter C. The situation was an experiment because a treatment was applied to the group (which in this case, is the experimental group).

The correct answer to the next question would be letter C. Angie is NOT are representative of the population in the algebra class.
You might be interested in
What is -20 + 1/2 in a decimal form
wel

Answer: The answer is -19.5

Step-by-step explanation: This is because 1/2 is .5 in decimal form. A negative <em>PLUS </em>a positive = is negative since the <em>-20 i</em>s larger than .5

4 0
3 years ago
Read 2 more answers
there are 4800 plastic spoons in a case there 6 box3s of spoons in each case how many spoons are in each box
Slav-nsk [51]

Sorry if im wrong but i am pretty sure that is 266

3 0
2 years ago
ILL GIVE A BRAINLIEST FOR THE ANSWER THAT HELPS ME THE MOSTT.​
Nuetrik [128]
he would be born june 12 1962
4 0
3 years ago
Can someone please explain?
AlladinOne [14]
<h2>Hello!</h2>

The answer is:

The correct option is the first option:  

y=-4x+64

<h2>Why?</h2>

To write the equation of the line in slope-interception  form we need to extract all the information that we need from the graphic.

We must remember that the slope-interception form of the lines is:

y=mx+b

Where,

y, is the function

m, is the slope of the line

x, is the variable

b, is the y-axis intercept

We can find the slope using the following formula:

m=\frac{ChangeInY}{ChangeInX}

Which is for this case:

m=\frac{64}{16}=4

As we can see from the graphic, the line is decresing, so the sign of the slope "m" will be negative, so:

m=-4

We can find the value of "b" seeing where the line intercepts the y-axis.

As we can see it intercept the y-axis at:  y=64

Then, now that we already know the value of "m" and "b", we can write the equation of the line:

y=mx+b=-4x+64\\y=-4x+64

So, the correct option is the first option:

y=-4x+64

Have a nice day!

4 0
3 years ago
Trina wants to hang-glide at the same number of meters above sea level as she scuba-dived below sea level.will she fly higher th
mihalych1998 [28]
I need more information, do you know how high Jessie flew and how low under sea level she went?
6 0
3 years ago
Other questions:
  • Factor completely then place the answer in the proper location on the grid. Write the answer in descending powers if x
    10·1 answer
  • The relationship between the measurements of the Earth Radius and Earth Mass of the ten exoplanets that are in closest proximity
    13·2 answers
  • a golf ball can travel 170mph. This is 10/7 times the fastest speed recored for a hockey puck. What is the recored speed for a h
    8·1 answer
  • A poll of 1,068 adult Americans reveals that 48% of the voters surveyed prefer the Democratic candidate for the presidency. At t
    14·1 answer
  • If I said 15402,How It could be in 2 significant?
    10·2 answers
  • PLSSS HELPPPPPP :(((((
    15·2 answers
  • The measure of an angle is 89. Find the measure of its supplement
    8·1 answer
  • PLEASE HELP ME FAST
    9·1 answer
  • Combine like terms: c + c + c <br> what do you get?<br> A- 3c<br> B- c3
    15·2 answers
  • Help me find the answer to this question for 50 points!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!