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MATH 1280-01 Introduction to Statistics - AY2025-T5
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What is the Z-score corresponding to the 90th percentile of a standard normal distribution?
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In a normal distribution, which value is the same as the mean?
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Which of the following statements about Z-scores is true?
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If a data point has a Z-score of 2, what does this indicate?
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For a continuous uniform distribution between 0 and 5, the probability that the random variable takes a value less than 3 is:
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The formula for the variance of a discrete random variable X is:
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Calculate the mean and variance for a Poisson distribution with λ = 5.
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For a continuous probability distribution defined for 0 ≤ x ≤ 13, what is the value of P(x > 13)?
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In a hospital, the average number of patients arriving in an emergency room per hour is 4. What is the probability of receiving exactly 2 patients in the next hour?
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A probability distribution function for a discrete random variable lists the values and their corresponding _____.
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