Question

Yasir wants to determine if there is a relationship between room color and sleep. Based on his research, Yasir makes an educated guess that people fall asleep more quickly in a room painted blue than in a room painted yellow. He asks several people which color they like better—yellow or blue—and uses their responses to determine if his educated guess was correct. What is missing from Yasir's scientific investigation? A. testable hypothesis based on research B. experiment that tests the hypothesis C. variables to be tested by an experiment D. research on the topic to see what others have learned

Answer 1

Yasir's scientific investigation is missing an actual experiment that tests the hypothesis. He should conduct a controlled experiment to measure sleep latency in different room colors.

Step-by-step explanation:

Yasir is trying to determine if there is a relationship between room color and sleep. He postulates that people fall asleep faster in rooms painted blue compared to those painted yellow. However, instead of conducting an experiment that tests the hypothesis, he merely asks people which color they prefer. The major element missing from his scientific investigation is a B. experiment that tests the hypothesis. To validate his hypothesis, Yasir should design an experiment with a control group and a variable group, where some participants sleep in blue rooms and others in yellow, then measure how quickly they fall asleep. Additionally, he should ensure that other variables are controlled so that the results solely reflect the impact of room color on sleep latency.

Answer 2

B). An Experiment that tests the hypothesis.

Step-by-step explanation:

The element that is missing from Yasir's scientific investigation is 'an experiment which tests a hypothesis.' His experiment does not provide a verifiable statement revealing his proposition or prediction regarding the possible outcome of the experiment which could be verified by using a research or investigation. He rather tests his proposition indirectly by asking 'which color they like better' and using it to make an educated guess. Thus, option B is the correct answer.