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
Alona [7]
2 years ago
5

A teacher interested in determining the effect of a new computer program on learning to read conducted a study. One hundred stud

ents were randomly assigned to one of two groups. The first group used the computer program while the second group did not. Both groups were tested to determine how much their reading levels improved. The results for the two groups were compared. What kind of study is this?
This is an experiment because a treatment was applied to a group.
This is an experiment because students were able to choose which group to join.
This is a survey because students were randomly assigned to groups.
This is a survey because a treatment was applied to both groups.
Mathematics
1 answer:
djyliett [7]2 years ago
4 0

Answer:2

Step-by-step explanation:

You might be interested in
Lorenzo ate 25 of his bag of almonds. His 4 friends ate equal shares of the remaining bag of almonds. Which expression represent
LiRa [457]

Answer:

(x - 25) / 4

Step-by-step explanation:

In this scenario, we have one unknown variable which is the total of the bag of almonds, therefore we can represent this with the variable x. Since Lorenzo ate 25 of this bag we would need to subtract this from the total of the bag. Then we need to divide the remainder by 4 since each of his friends ate the rest in equal parts. This would leave us with the following expression ...

(x - 25) / 4

3 0
3 years ago
BRAINLIEST
a_sh-v [17]

Answer:

X will be your answer be 126 and 110

Step-by-step explanation:

6x3x7=126

y=11x2x5=110

so X>Y

hope it helps!

4 0
3 years ago
Lissie set a goal to save $320 for a new computer. So far she has saved $112. What percent of her goal has Lissie saved so far?
Mariulka [41]
These are false. Tami will need to work 11 weeks to get to her goal. To find out this problem, first take out the 100 from the 320 which then gives you 220.  Then divide 220 by 20 which gives you 11. 1 is wrong because Tami does not have to work more than 21 weeks to get to her goal. 2 is also wrong because Tami does not need to save more that 11 weeks to get to her goal, she has to work 11 weeks only. 
7 0
3 years ago
What is the probability that if you multiply two randomly-selected two-digit whole numbers, the result is greater than 100 and l
ohaa [14]

Answer:

4/675

Step-by-step explanation:

There can be 90  two-digit numbers ranging from 10 to 99. There will be

90 x 90= 8100 possibilities of randomly selecting and combining 2 entire two-digit numbers, if we find ax b to be distinct from bx a. When 10 is first chosen, there may be 9 two-digit numbers that could be combined within the required range for a product When 11 is chosen first, then the second two-digit number has 9 possibilities. 12 has seven options; 13 has six options; 14 has five options; 15 has four options; 16 has three options; 17 has two options; 18 has 2 options; and 19 has one option. It provides us 48 total choices so the likelihood that the combination of two randomly chosen two-digit whole numbers is one of theses  these possibilities is thus 48/8100 = 4/675.

8 0
4 years ago
How many ways are there to select a 5-card hand from a regular deck such that the hand contains at least one card from each suit
Snezhnost [94]

Answer:

There are 685464 ways of selecting the 5-card hand

Step-by-step explanation:

Since the hand has 5 cards and there should be at least 1 card for each suit, then there should be 3 suits that appear once in the hand, and one suit that apperas twice.

In order to create a possible hand, first we select the suit that will appear twice. There are 4 possibilities for this. For that suit, we select the 2 cards that appear with the respective suit. Since there are 13 cards for each suit, then we have {13 \choose 2} = 78 possibilities. Then we pick one card of all remaining 3 suits. We have 13 ways to pick a card in each case.

This gives us a total of 4*78*13³ = 685464 possibilities to select the hand.

6 0
3 years ago
Other questions:
  • Susie and her mother are planting a flower garden. It will be in the shape of a right triangle. They draw a diagram of a triangl
    14·1 answer
  • I don't get this plz plz help me thanks
    8·1 answer
  • If m = 2 and b =-6, what is the correct slope intercept equation?
    12·2 answers
  • Use the figure to the right to find the value of PT. T is the midpoint of PQ.
    14·1 answer
  • In the diagram of circle C, what is the measure of 21?
    7·1 answer
  • HELP PLSSS<br><br>solve the inequality -9x/11-7&lt;-5
    8·1 answer
  • SOMEBODY PLEASE EXPLAIN THE ANSWER
    7·1 answer
  • Which best describes the association between variables x and y?
    11·1 answer
  • Subtract: (–3x2 + 7 – 2x) – (6 + 7x – 4x2)
    14·1 answer
  • What is the answer to the question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!