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. Use a = .01 as the level of significance.