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A population has a mean score of 75 and a standard deviation of 13. What is the probability of choosing a random sample of 100 people from this population with a mean of 78 or higher? Show work.
Statistics and Probability, Statistics
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Let X be a normally distributed random variable with μ = 100 and σ = 10. Find the probability that X is between 80 and 105. (Round your answer to the nearest whole number percent and include the percent symbol.)
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