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please read the Focus problem at the beginning of this chapter. Recall that Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301 (see the reference in this chapter's Focus problem). Now suppose you are an auditor for a very large corporation. The revenue report involves millions of numbers in a large computer file. Let us say you took a random sample ofn= 216 numerical entries from the file andr=52 of the entries had a first nonzero digit of 1. Letprepresent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1.
i. Test the claim thatpis less than 0.301. Use a = 0.05.
ii. If p is in fact less than 0.301, would it make you suspect that there are not enough numbers in the data file with leading 1's? Could this indicate that the books have been "cooked" by "pumping up" or inflating the numbers? Comment from the viewpoint of a stockholder. Comment from the perspective of the Federal Bureau of Investigation as it looks for money laundering in the form of false profits.
iii. Comment on the following statement: "If we reject the null hypothesis at level of significance a, we have not proved H0 to be false. We can say that the probability is a that we made a mistake in rejecting H0." Based on the outcome of the test, would you recommend further investigation before accusing the company of fraud?
It operates at a bias current of 0.1 mA between a source with Rsig =rπ and a load RL =βro. Let CL =Ccs =0, and rx =0. Find the overall voltage gain at dc. By evaluating the various components of τH show that the pole introduced at the output mode ..
Consider another possibility for the circuit in Fig. 16.7: Relabel the R input as S and the S input as R. Let S and R normally rest at VDD. Let the flip-flop be storing a 0; thus VQ = 0 V and VQ = VDD. To set the flip-flop, the S terminal is lower..
question 1a the use of satellites in rf communication system is a great deal fact in everyday life.i explain in detail
Use Matlab to obtain the poles of the system. Is the system stable? Explain.
Draw a plan of a typical strip mine showing all operational features and equipment - Summarise the steps in the development of an open pit mine. b. What are the purposes of safety benches?
Review the article "8 ways electronic work instructions are transforming the shop floor" from this week's reading assignment. This article discusses the importance of work instructions and how these instructions have improved a company that runs a..
E15: Fundamentals of Digital Systems - Fall 2015 - HOMEWORK 8. In what ways is this similar to a counter? How is it similar to a shift register? Write down the state transition function as a truth table with 16 rows
The first cash flow of a 25-year series of quarterly cash flows is equal to $35,000. Each cash flow in the series increases by $800. Find the amount of each cash flow in an equal quarterly cash flow series that is equivalent to the increasing cash..
Produce the most all encompassing definition of technology while discussing Heidegger's article. Having discussed willed ignorance during the critical thinking discussion, now is your chance for some self-reflection.
Determine the discharge of water at 15°C in a I-m-diameter pipe that is dynamically similar to a water velocity of 8 ds at 20°C in a 10-cm-diameter pipe.
The reaction A giving 2B+C takes pace in a catalytic reactor. The reactor effluent is sent to a separator. Calculate the single pass conversion of A in the reactor and molar ratio of recycle to feed.
How does this process / technique / etc. improve on what had been done in the past - what are the key technological issues behind the technique?
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