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1. Verify that for the data in the previous problem, the boxplot rule declares the values 20, 240, and 250 outliers
2. What do the last three problems suggest about the boxplot rule versus the classic rule for detecting outliers?
Statistics and Probability, Statistics
Let be a random variable with probability function f ( x )=144/205 x^ 2 , where x =1,2,3,4. (a) Find the expected value of X (b) Find the expected value of Y =2 X +3
What would be the net annual cost of the following checking account? Interest earnings of 3 percent with a $550 minimum balance; average monthly balance, $800; monthly service charge of $15 for falling below the minimum ...
You work for a firm that manufactures DVD players. Your DVD players last an average of 800 days with a standard deviation of 200 days. You want to set the warranty length such that you only have to replace 1.5% of all th ...
New varieties of corn with altered amino acid content are being investigated for higher nutritional content. The two new varieties, opaque-2 and floury-2, were to be compared to the normal corn. Also different levels of ...
Rework problem 20 from section 3.4 of your text, involving silver rental cars with navigation systems. Assume that the car lot contains 35 percent Lincolns, 35 percent Jaguars, and 30 percent BMWs. Of the Lincolns, 90 pe ...
The time between accidents in a day in town A is given by T and the time between accidents in a day in town B is given by S. The joint density function for T and S is f ( t , s )= e^ -( t + s ) , for t ≥0 and ...
'"Consider the average home mortgage in New Zealand of $283 000 where the standard deviation of the mortgages is $50 000 and home mortgages are normally distributed. If a home is known to be more than $250 000, what is t ...
A data firm records a large amount of data. Historically, 1.0% of the pages of data recorded by the firm contain errors. If two hundred pages of data are randomly selected? a. What is the probability that six or more pa ...
Robertson Steel is forecasting the following numbers: EBIT $1,000,000 Interest Expense 300,000 ROE 20% The company is in the 40 percent tax bracket. After putting together the forecast the ...
The random variable X takes on the values 5, 20, 30, and 200 with probabilites 0.60, 0.30, 0.08, and 0.02 respectively. Use the statistical capacity of your calculator to find the expected value of Xrounded to one place ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
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