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How do you know the column to use in the t table and z table in statistics with a normal populations. I never seem to get the right column what are the rules?
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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How does a histogram help us know the probability of getting a certain value for a variable? In other words how does the histogram relate to probability?
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