Mathematics, 05.01.2022 07:10 xchnemymp
A company makes a bracelet that is designed to repel mosquitos so people don't have to wear bug spray. Researchers at the company are designing an experiment where volunteers will be assigned either the bracelet or bug spray to use at their homes. The researchers want to use a randomized block design. How should the researchers form the block? (Choose one and explain why, please also explain why other methods wouldn't work).
a. Both the volunteers and researchers should be kept blind as to which block the volunteers are in.
b. Each block should consist of volunteers who live in similar environments when it comes to mosquitos.
c. Each block should consist of volunteers who live in different environments when it comes to mosquitos.
d. Each volunteer should be randomly assigned to a block.
e. Volunteers in one block should use the bracelet, while volunteers in the other block should use bug spray.
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Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?
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