Regression through the origin
Consider regression through the origin (straight line regression with population intercept know to be zero) with Var(e|x)=x^2sigma^2.
The regression model is Y=Bx+e(i=1,...n).
Find an explicit expression for the weighted least squares estimate of B.
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Consider S be the linearly independent set of 2x2 matrices. Find maximum number of matrices in S? What if S was the set of linearly independent mxn matrices?
Determine the expected profit if three magazines are ordered? (Round your answer to two decimal places.) Determine the expected profit if four magazines are ordered? (Round your answer to two decimal places.)
Because not all airline passengers show up for their reserved seat, airline sells 140 tickets for flight which holds only 130 passengers. The probability that the passenger doesn't show up is 0.08, and the passengers behave independently.
Set up the matrix B and the vector u such that Bu provides amounts of calories, protein, fiber, and fat contained in the mixture of 3 servings of Shredded Wheat and two servings of Crispix.
Consider regression through the origin (straight line regression with population intercept know to be zero) with Var(e|x)=x^2sigma^2. The regression model is Y=Bx+e(i=1,...n).
Assume you withdraw $100 every month from the account with initial balance of $10,000. If annual rate of interest is 4%, how long it takes to have $1,000 in the account?
Ralphs Gas Station is running the give away promotion. With every fill-up of gasoline, Ralph gives out the lottery ticket which has a 25% of chance of being winning ticket. Customers who gather four winning lottery tickets are eligible for BIG SPI
Determine the probability that the first machine produces an acceptable cork? (Round your answer to four decimal places.) Determine the probability that the second machine produces an acceptable cork? (Round your answer to four decimal places.)
Assume f(-1) was overstated by 2 and f(1) was understated by 3. Find error in original computation of value of interpolating polynomial to approximate f(0).
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