Read the prompt and type the letter for the phrase that matches the given key term.
"How does sleep deprivation affect your ability to drive? A recent study measured the effects on 19
professional drivers. Each driver participated in two experimental sessions: one after normal sleep and
one after 27 hours of total sleep deprivation. The treatments were assigned in random order. In each
session, performance was measured on a variety of tasks including a driving simulation."
• A = 19 professional drivers
• B = Amount of sleep
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C = Assigning the treatments in random order
D= Completing the experimental session under normal sleep conditions
• E = Normal sleep and 27 hours of total sleep deprivation
• F = Performance measured in assigned driving task
*Note: answers are used once and one will be left over
What is the explanatory variable?