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On Friday, Wall Street traders were anxiously awaiting the federal government's release of numbers on the January increase in nonfarm payrolls. The early consensus estimate among economists was for a growth of 250,000 new jobs. However, a sample of 20 economists taken Thursday afternoon provided a sample mean of 266,000 with a sample standard deviation of 24,000 Financial analysts often call such a sample mean, based on late-breaking news, the whisper number. Treat the "consensus estimate" as the population mean.
- Conduct a hypothesis test to determine whether the whisper number justifies a conclusion of a statistically significant increase in the consensus estimate of economists. Usa a=.01 as the level of significance.
if x1 and x2 are normally distributed random variables with a mean of 95 and a standard deviation of 20 and that x1 and
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1 analyze and interpret the process behavior charts of selected quarterly earnings data of southwest airlines between
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