The shape of the normal probability distribution is determined by the population standard deviation . Small values of
reduce the height of the curve and increase the spread; large values of
increase the height of the curve and reduce the spread.
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Q48: Given a normal random variable x with
Q49: Given that z is a standard normal
Q50: Let Q51: Given that z is a standard normal Q52: Given a normal random variable x with Q54: A continuous random variable x is normally Q55: Given a normal random variable x with Q56: Using the standard normal curve, the z-score Q57: The left half of the normal curve Q58: If x is a normal random variable
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