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Which of the following is the correct null hypothesis for a repeated-measures t test?
Mucosa
The moist, inner lining of some organs and body cavities, such as the nose, mouth, lungs, and stomach.
Bile
A digestive fluid produced by the liver, stored in the gallbladder, and released into the small intestine to aid in the digestion and absorption of fats.
Bloodstream
The flowing blood within the circulatory system of the body, carrying oxygen, nutrients, and waste products to and from the cells.
Colitis
Colitis is the inflammation of the inner lining of the colon and is associated with symptoms like abdominal pain, cramping, and diarrhea.
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