a scientist is conducting a study in order to...
a scientist is conducting a study in order to find the connection between sleep and reading performance. the study involves taking subjects with differing sleep levels and having them read out of the same book for an hour. what the scientist found was that every participant could read at least 12 pages within the given time, and for each hour of sleep the test subject had, they were able to read an additional 3 pages. which of the following choices correctly identifies the independent variable of this situation?\nshow your work here\n\nthe total number of pages a test subject reads\nthe amount of time the subjects are given to read\nthe amount of sleep a test subject receives\nthe base number of pages each subject reads
Answer
# Brief Explanations:
An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. In this study, the scientist is varying the amount of sleep subjects have to see how it affects reading performance (number of pages read). The time to read is fixed, and the base - number of pages and total pages read are dependent on the amount of sleep.
# Answer:
The amount of sleep a test subject receives