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You have arranged to go camping for two days in March.You believe that the probability that it will rain on the first day is 0.4.If it rains on the first day,the probability that it also rains on the second day is 0.5.If it doesn't rain on the first day,the probability that it rains on the second day is 0.3.Let the random variable X be the number of rainy days during your camping trip.Find the standard deviation of X.
Moderate Arousal
An optimal level of mental or physical activation that can enhance performance or learning according to arousal theory.
Relaxation Exercises
Techniques or activities designed to reduce stress and induce a state of calm.
Yerkes-Dodson Law
A theory suggesting there is an optimal level of arousal for the best performance of a task: too little or too much arousal can decrease performance.
Physical Arousal
The physiological state of being alert and engaged, often including increased heart rate, blood pressure, and sensory alertness.
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