1. A bank manager wishes to estimate the average waiting time for customers in line for tellers. A random sample of 50 customers’ times is measured and the average waiting time is 5.7 minutes. The population standard deviation of waiting…

1. A 99% confidence interval for population mean needs to be calculated with margin of error equal to 4.If σ = 15, what sample size is needed in this study? A. 94 2. A continuous random variable may assume _____.…

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1. A continuous probability distribution that is useful in describing the time, or space, between occurrences of an event is a(n) _____ probability distribution. A. exponential 2. A graphical method of representing the sample points of an experiment is a…

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