Confidence interval for the mean
Using the data below, identify the confidence interval for the mean based on a 95% confidence level. Assume that the population mean is $55 and the standard deviation is $5.
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In the bucket there are 200 tickets and 36 of them have a W. Let's consider the first 20 students that draw a raffle ticket and calculate the following. What is the expected number of W's drawn?
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