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Verdich [7]
2 years ago
13

PLEASE HELP!!

Social Studies
1 answer:
Fofino [41]2 years ago
4 0

Answer: d. Neither the researchers nor the experimental subjects know whether the latter have been assigned to an experimental group or a control  group.

Explanation:

A Double-blind design refers to a kind of experimental procedure aimed to reduce the possibility of any subjective biases on both the researchers and the participants. Mostly used in medical trials of drugs, double-blind experiments have participants randomly selected to be part of either the control or the experimental group. There´s a third party in charge of providing the random selection and encoding the information until the data collection is completed.

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B is the correct answer

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3 years ago
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kaheart [24]

Answer:

Acid rain etc.

Explanation:

Climate change, ocean acidification, carbon emissions, urbanisation, wastewater treatment, ozone depletion, water contamination, species extinction, and other environmental issues affect every individual, plant, and nation on earth.

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A correlation coefficient of .90 indicates a(n) ________ relationship between two variables. strong positive strong positive str
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<h3>What is a correlation coefficient?</h3>

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3 0
2 years ago
Why should infants be baptized? when did the practice of infant baptism begin?
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True or False questions! Please Help!!!
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1) True

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Explanation:

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