Intro to Chem Exam 1
In order to test a hypothesis, what should the order of the following steps be?
- Analyze data
- Confirm or revise the experiment
- Collect data
- Design an experiment - ✔✔ correct answer 1. Design an experiment
2. Collect Data
3. Analyze Data
4. Confirm or revise the experiment
Which of the following experiment setups would be the best way to test your hypothesis?
A. After the exam, give students a survey questioning their study habits and what grade they made
on their exam.
B. Before the exam, give students a survey questioning their study habits.
C. After the exam, give students a survey questioning their study habits and what grade they think
they made on the exam.
D. Before the exam, give students a survey questioning their study habits and what grade they think
they will make on the exam. - ✔✔ correct answer A. After the exam, give students a survey
questioning their study habits and what grade they made on their exam.
After the exam has been completed, you have the students anonymously fill out a questionnaire
asking about their study habits for the exam and the grade they earned on the exam. From the
surveys, you randomly select 10 students who studied for the exam and 10 students who did not
study for the exam. You create the table showing the students' exam grades given here:
10 students who studied: 93 96 90 87 89 99 78 96 97 95
10 students who did not study: 65 72 71 64 55 49 88 67 76 63
What was the average exam grade for each set of students?
Enter the average exam grade of students who studied, followed by the average exam grade of the
students who did not study, using two significant figures, separated by a comma. - ✔✔ correct
answer 92,67
, Intro to Chem Exam 1
Add all 10 scores, and divide by the number of students, in this case 10.
Consider the numbers 0, 10, 20, 30, and 40. Multiply each by 4 and compare the result to 60 to
determine into which of the following intervals the answer to the question "What number can you
multiply by 4 and then add 8 to the product to get 60?" should fall.
Select the interval into which the answer should fall:
A. 0 to 10
B. 10 to 20
C. 20 to 30
D. 30 to 40 - ✔✔ correct answer 4x+8=60?
B. 10-20
4x+8=60
1. Divide by 4 on each side (60/4 = 15)
2. Subtract 8 from each side (15-8 = 7)
3. x=7
Recall that the equation 4x+8=60 was restated in words as, "What number multiplied by 4 and then
added to 8 gives 60?" Which of the following would be an equivalent way to write this?
A. What number can you multiply by 4 to get a number 8 less than 60?
B. What number can you subtract 60 from and then divide by 4 to get 8?
C. What number can you multiply by 4 to get a number 8 larger than 60?
D. What number can you divide by 4 to get a number 8 less than 60? - ✔✔ correct answer A. What
number can you multiply by 4 to get a number 8 less than 60?
You know that a number 8 less than 60 is the number 52. So, you could rewrite your answer from the
previous part as, "What number can you multiply by 4 to get 52?" This is just the definition of 52
divided by 4! So, what is the number x you are looking for? - ✔✔ correct answer x=13
In order to test a hypothesis, what should the order of the following steps be?
- Analyze data
- Confirm or revise the experiment
- Collect data
- Design an experiment - ✔✔ correct answer 1. Design an experiment
2. Collect Data
3. Analyze Data
4. Confirm or revise the experiment
Which of the following experiment setups would be the best way to test your hypothesis?
A. After the exam, give students a survey questioning their study habits and what grade they made
on their exam.
B. Before the exam, give students a survey questioning their study habits.
C. After the exam, give students a survey questioning their study habits and what grade they think
they made on the exam.
D. Before the exam, give students a survey questioning their study habits and what grade they think
they will make on the exam. - ✔✔ correct answer A. After the exam, give students a survey
questioning their study habits and what grade they made on their exam.
After the exam has been completed, you have the students anonymously fill out a questionnaire
asking about their study habits for the exam and the grade they earned on the exam. From the
surveys, you randomly select 10 students who studied for the exam and 10 students who did not
study for the exam. You create the table showing the students' exam grades given here:
10 students who studied: 93 96 90 87 89 99 78 96 97 95
10 students who did not study: 65 72 71 64 55 49 88 67 76 63
What was the average exam grade for each set of students?
Enter the average exam grade of students who studied, followed by the average exam grade of the
students who did not study, using two significant figures, separated by a comma. - ✔✔ correct
answer 92,67
, Intro to Chem Exam 1
Add all 10 scores, and divide by the number of students, in this case 10.
Consider the numbers 0, 10, 20, 30, and 40. Multiply each by 4 and compare the result to 60 to
determine into which of the following intervals the answer to the question "What number can you
multiply by 4 and then add 8 to the product to get 60?" should fall.
Select the interval into which the answer should fall:
A. 0 to 10
B. 10 to 20
C. 20 to 30
D. 30 to 40 - ✔✔ correct answer 4x+8=60?
B. 10-20
4x+8=60
1. Divide by 4 on each side (60/4 = 15)
2. Subtract 8 from each side (15-8 = 7)
3. x=7
Recall that the equation 4x+8=60 was restated in words as, "What number multiplied by 4 and then
added to 8 gives 60?" Which of the following would be an equivalent way to write this?
A. What number can you multiply by 4 to get a number 8 less than 60?
B. What number can you subtract 60 from and then divide by 4 to get 8?
C. What number can you multiply by 4 to get a number 8 larger than 60?
D. What number can you divide by 4 to get a number 8 less than 60? - ✔✔ correct answer A. What
number can you multiply by 4 to get a number 8 less than 60?
You know that a number 8 less than 60 is the number 52. So, you could rewrite your answer from the
previous part as, "What number can you multiply by 4 to get 52?" This is just the definition of 52
divided by 4! So, what is the number x you are looking for? - ✔✔ correct answer x=13
