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Assuming a random sample from a large population, for which of the following nullhypotheses and sample sizes is the large-sample z test appropriate?
Show thecalculations leading to your responses.
a)
b)
Parathyroid Hormone
A hormone produced by the parathyroid glands that regulates the levels of calcium and phosphorus in the body.
Cortisol
A steroid hormone produced by the adrenal glands, playing a role in stress response, metabolism, and immune function.
Insulin
A hormone produced by the pancreas that regulates blood sugar levels.
Serotonin
A neurotransmitter in the brain associated with regulating mood, anxiety, and happiness.
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