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You are provided with a random sample of PSU undergrads that is proportionate to the population. It includes 60 first-years, 50 sophomores, 50 juniors,

You are provided with a random sample of PSU undergrads that is proportionate to the population. It includes 60 first-years, 50 sophomores, 50 juniors, and 40 seniors. The mean of the dependent variable for each strata is as follows: First-years = 7 Sophomores = 12 Juniors = 10 Seniors = 6 What is the weighted mean? If there are any decimal points in your answer, make sure to round your answer to two decimal places.

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