A researcher wonders how well the sense of smell functions during sleep. In general, we know that our sensory systems operate at a higher threshold during sleep.

A researcher wonders how well the sense of smell functions during sleep. In general, we know that our sensory systems operate at a higher threshold during sleep. That is, a more intense stimulus is required to elicit a response during sleep than during wakefulness.https://paperwriters.xyz/java/question-breakdownquiz-is-at-10pm-est-but-if-you-can-take-it-now-or-whenever-you/Furthermore, we are less responsive during some stages of sleep than during others. Experiments using sounds suggest that we are less responsive during stages 3 and 4 sleep (deep sleep) than during stages 1, 2, or REM sleep (lighter sleep). Thus, the 4 - 16 researcher predicts that research participants will be less responsive to odors during stages 3 and 4 sleep than during the other stages of sleep. The researcher devises a system for delivering odors while college students sleep in the laboratory. Peppermint fragrance is delivered at specific times through a modified oxygen mask that the students wear while they sleep.https://hybridessays.com/nutrition/below-are-the-documents-needed-to-complete-your-three-day-food-record-assignment/Electrodes are attached to each student’s scalp, face, and chin to determine sleep staging. Electrodes are also attached to each student’s chest to record heart rate. A change in heart rate following presentation of the odor is used to indicate that the participant detected the odor.

1. Read the scenario above and answer the following questions:
   1. What is the research hypothesis?
   2. What is the independent variable?
   3. Is the independent variable a qualitative variable or a quantitative variable?  Explain. 
   4. Why might the researchers want to use multiple dependent variables?
   5. Describe one limitation of this study.https://hybridessays.com/pharmacology/i-will-attach-a-handout-that-is-an-example-on-the-drug-remicade-this-is-not-the/
2. Create an original posting with a minimum of 250-300 words.
3. Back up your arguments with reliable evidence.