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The head librarian at the Library of Congress has asked her assistant for an interval estimate of the mean number of books checked out each day. The assistant provides the following interval estimate:
From 740 to 920 books per day. If the head librarian knows that the population standard deviation is
150 books checked out per day, and she asked her assistant for a 95% confidence interval,
Approximately how large a sample did her assistant use to determine the interval estimate?
Detrusor Muscle
A smooth muscle that contracts to push urine from the bladder into the urethra.
Loop of Henle
A long, U-shaped portion of the tubule that conducts urine within each nephron of the kidney. It plays an important role in concentrating urine and recovering water and ions from the urine.
Proximal
Anatomical term meaning closer to a point of attachment or closer to the trunk of the body.
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