Chemistry, 07.01.2021 01:40 chrissyg76
14. A researcher Is curious to find out what effect classical music has on people's level of relaxation
(as measured by heart rate). She suspects that listening to classical music will make people feel
more calm and relaxed. The researcher lets one group listen to classical music for one hour and
then do a relaxing activity, like reading or drawing for another hour. She lets the other group sit in a
qulet room for two hours (they hear no music). After two hours, she monitors the heart rate of each
participant to measure their level of relaxation.
What is the error in thls experiment design?
A. There are two independent variables: classical music and an additional relaxing activity
B. There are two independent variables: the amount of time and heart rates
C. There are two dependent variables: classical music and an additional relaxing activity
D. There are two dependent variables: the amount of time and heart rates
Answers: 3
Chemistry, 22.06.2019 00:00
Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.
Answers: 3
Chemistry, 22.06.2019 11:00
The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
Answers: 1
Chemistry, 22.06.2019 14:00
What mass of natural gas (ch4) must you burn to emit 276 kj of heat?
Answers: 2
Chemistry, 23.06.2019 00:30
When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two
Answers: 2
14. A researcher Is curious to find out what effect classical music has on people's level of relaxat...
Mathematics, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
English, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
Mathematics, 04.12.2020 20:30
History, 04.12.2020 20:30
Engineering, 04.12.2020 20:30
English, 04.12.2020 20:30
History, 04.12.2020 20:30