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In a sample of 20 employees, the mean length of the work week is 50 hours long, with standard deviation of 10 hours. What is the 99% confidence interval for the average work week?
Sun Microsystems has approximately 50% of the high-end Unix machines market with its closest competitor being IBM. Suppose that 15 firms were in the market to purchase a high-end Unix machine. Assume that these firms listened to sales pitches by a..
Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspector believes that the mean weight may be more than this
Using Area of Residence (Area A or Area B) as my stratification factor, explain, in detail, how you would select a sample of 60 inhabitants by using stratified random sampling.
You are in contract negotiations. The seller is insisting on a time and material contract. What are some of the concerns with a time and material contract.
models of the pricing of stock options often make the assumption of a normal distribution. an analyst believes that the
Again referring to the data in 'odometer' from AnzacG.xls and the population from which it is drawn, determine the sample size required to estimate the population mean to within 5,000 kms with 90% confidence. Again assume the population standard d..
find ex where x is the outcome when one rolls a six-sided balanced die.find the mgf of x. also using the mgf of x
Assuming that these ages constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal places.
a 5-card poker hand is dealt. find the probability of gettinga four of a kindb three of a
The researcher wanted to investigate the influence of diet, specifically the role of saturated fat in the diet, on the development of a myocardial infarction (heart attack). What is the sample and population in this study?
Determine the probability function and the distribution function of X and sketch their graphs.
Concerned about global warming? The Institute for Public Opinion Research at Florida International University has conducted the FIU/Florida Poll
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