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1. The probability that a system recovers from a rare cold spell is 0.35. If 80 systems are known to be affected by cold spell is a certain year, what is the probability that less than 40 recover?
2. Historical records of sewer pipe failures in an old city show that during the period 2005 to 2013, there were 30 failures that were catastrophic (exploded due to the build-up of methane or other gases). Assuming that the pipe failures follow a Poisson process, find the probability that
(a) 4 catastrophic failures occur within the next 6 months,
(b) the interval from now till the next catastrophic pipe failure will be at most 2 months
(c) The probability that no catastrophic pipe failure will occur in the next 12 months.
is the accounting system the same for a merchandising business and a service business?
suppose bolts are being manufactured using a process so that it is known that the length of the bolts follows a normal
Write a paper of no more than 1250 words in which you conduct a comparative and ratio analysis to measure profitability and liquidity.
First interchange the degrees of freedom, and then take the reciprocal of the resulting F value found in Table A-5. Find the critical values FL and FR for two-tailed hypothesis tests based on the following values.
give two suggestions regarding how a statistician might generate probability estimates when empirical data is
horace hadley has just programmed a superb ocr package called read-right pun unintended that has an average error rate
question a company hired 20 salespeople and gave them an initial sales skills examination test scores ranged from 68
Planning Investments. Your uncle has $90,000 that he wishes to invest now in order to use the accumulation for purchasing a retirement annuity in five years. After consulting with his financial adviser, he has been offered four types of fixed income ..
assume that a procedure yields a binomial distribution with a trial repeated ntimes. use a binomial probabilities table
in a one-dimensional random walk with equal step lengths l along a gently inclined planed the probability of a step
in 1998 20 of university undergraduate students had at least one tattoo. a health practitioner obtains a random sample
If five of the recommended stocks will increase in value over the next year, determine the probability that at least half of the stocks selected by the client will increase in value over the next year. Explain.
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