Question

I award metals!!! I think I know the answers, but I need someone to just double check them please!

Answer 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?

This is an observational study because students were randomly assigned to groups.

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

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.

Answer 2

Thinking c

Answer 3

c is correct !

Answer 4

Thank you!

Answer 5

I got 4 more with the answers I think are right.

Answer 6

A teacher dropped 8 coins on the table and counted the number of tails to simulate the number of questions a student might guess correctly on a true/false quiz with 8 questions. The dot plot below shows the results of one hundred trials. Based on this data, which number of correct answers is most unlikely?

Answer 7

2
5
6
7

I think 5

Answer 8

Correct ! 5 and 0 are more unlikely than others based on dot plot

Answer 9

Okay thank you!

Answer 10

np :)

Answer 11

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?

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

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

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

No, because Angie scored too high on the test


Is it C?

Answer 12

@ganeshie8 do you know if I'm right?

Answer 13

@Darrius can you help please?

Answer 14

C is correct. I know this is closed, but this is for future reference for others on this site.

Answer 15

Thank you @etessa7416 for posting!