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Central Tendency

Optimal Policy Problem

My professor gave us the solution to one of our homework problems, and I don't understand. The attached file contains his solution, and my questions in red. Can you please help me to understand? A vendor sells sweatshirts at football games. They are equally likely (0.5,0.5) to sell 200 or 400 sweatshirts per game. Each or

Expected value

Given a random variable X with the following PDF: X -3 -2 -1 0 1 2 3 pi 1/8 1/8 1/8 1/4 1/8 1/8 1/8 Find expected value E(X) and variance D(X)


Use the table above to determine P(X is greater than or equal to 2). Determine the expected value of X. PROBLEM 2 Two fair dice are tossed. You bet $5 that you will roll "an even sum". If you roll "an even sum" you win $10. Otherwise you lose the $5 bet. What is the expected return on this game? PROBLEM 3

Sources of Variation

Average time it takes to process applications Office 1 Office 2 Office 3 Employee 1 15 11 17 Employee 2 17 21 15 Employee 3 14 12 17 Employee 4 16 27 16 Excel Output - Anova: Single Factor SUMMARY Groups Count Sum Average Variance Column 1 4 62 15.5 1.666667 Column 2 4 71 17.75 58.2

Expected value

Calculate the e-time that an arriving pedestrian must wait until crossing. See attachment.

Accounting: Investment Advice and Taxes

Bernie and Pam Britten are a young married couple beginning careers and establishing a household. They will each make about $50,000 next year and will have accumulated about $40,000 to invest. They now rent an apartment but are considering purchasing a condominium for $100,000. If they do, a down payment of $10,000 will be requi