At a restaurant that sells appetizers: 8% of the appetizers cost $1 each, 20% of
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• 8% of the appetizers cost $1 each,
• 20% of the appetizers cost $2 each,
• 32% of the appetizers cost $3 each,
• 40% of the appetizers cost $4 each.
An appetizer is chosen at random, and X is its price. Each appetizer has 7% sales tax. So Y - 1.07X is the amount paid on the bill (in dollars). Find the variance of Y.
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Related Book For
Introduction to Probability
ISBN: 978-0716771098
1st edition
Authors: Mark Daniel Ward, Ellen Gundlach
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