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Bob and Barbara are friends. Bob takes out a $10,000 loan and agrees to repay it over twelve years by making annual equally sized (level) payments at an effective rate of 5.62499%. At the same time, Barbara takes out a $10,000 loan and agrees to repay it by making annual interest payments at an annual effective interest rate of i. She also agrees to make annual level deposits into a sinking fund that earns 4% annual effective interest so as to accumulate $10,000 at the end of the twelve years. Bob and Barbara discover they have the same total annual expenditures resulting from their loans. Find the rate i.
A research firm wants to compare the miles per gallon of unleaded regular, mid-grade, and super grades of gasoline. They drive the same car under approximately similar driving conditions and changing out the type of gasoline used.
a variety of studies suggest that 10 of all people are left-handed. does the student survey data support this
lily estimates that her time to fall asleep each night is approximately exponentially distributed. it takes her an
Your office has just received 110 insurance claims to be processed in the next few days. What is the probability that fewer than 45 of the claims have been padded?
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 96 pounds. A random sample of 50 newly manufactured cables has a mean breaking strength of 1950 pounds.
annual starting salaries for college graduates with degrees in business administration are generally expected to be
question we are comparing two software packages one existing and one new software. ten sets of computations are run by
the grains composing polycrystalline metals tend to have weights that follow a log-normal distribution. for a type of
a new integrated computer system is to be installed worldwide for a major corporation. bids on this project are being
On basis of these data, can college conclude that students in new program performed significantly better than rest of freshman class? Use a one-tailed test with α = .05.
despite the shortcomings of the linear probability model and the advantages of the mle approach. yet the linear
Carry out a significance test for the hypothesis that the two tests have the same population mean. Give the P-value and state your conclusions.
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