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# Effects of class size Do smaller classes in elementary school really benefit students in

ISBN: 9781464108730 488

## Solution for problem 49 Chapter 4.2

The Practice of Statistics | 5th Edition

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The Practice of Statistics | 5th Edition

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Problem 49

Effects of class size Do smaller classes in elementary school really benefit students in areas such as scores on standardized tests, staying in school, and going on to college? We might do an observational study that compares students who happened to be in smaller and larger classes in their early school years. Identify a variable that may lead to confounding with the effects of small classes. Explain how confounding might occur.

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A) How many units must be sold to breakeven B) What is the dollar amount coming in for the dollar amount going out -- should they be the same when you breakeven Guided Practice : 1)A grocer needs to mix raisins at \$2.00 per pound with granola at \$3.25 per pound to obtain 10 pounds of a mixture that costs \$2.50 per pound.How many pounds of raisins and how many pounds...

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