Recently, David has struggled to fall asleep. Even when he does fall asleep, he's not getting the deep, slow-wave sleep that his body needs. His doctors report that his _______ gland is under-producing melatonin and he's missing out on _________ sleep.  Group of answer choices Pineal; REM Pituitary; Stage 3 Pineal; Stage 3 Pituitary; REM Adrenal; REM

Amy and her research team are are conducting a study on the influence of gender on mask-wearing behavior. To do so, she and her team visit 20 Cloud-9 Stores all across the country. Once there, they park and spend an hour observing and recording every male and female wearing a mask and every male and female not wearing a mask. 

She predicts that masks are more likely to be worn by a higher percentage of women than the percentage of men. Her prediction is best described as a(n):