Question: According to Money the average appreciation in percent for stocks
According to Money, the average appreciation, in percent, for stocks has been 4.3% for the five-year period ending in May 2007. An analyst tests this claim by looking at a random sample of 50 stocks and finds a sample mean of 3.8% and a sample standard deviation of 1.1%. Using α = 0.05, does the analyst have statistical evidence to reject the claim made by the magazine?
Answer to relevant QuestionsA certain commodity is known to have a price that is stable through time and does not change according to any known trend. Price, however, does change from day to day in a random fashion. If the price is at a certain level ...Average soap consumption in a certain country is believed to be 2.5 bars per person per month. The standard deviation of the population is known to be σ = 0.8. While the standard deviation is not believed to have changed ...The theory of finance allows for the computation of "excess" returns, either above or below the current stock market average. An analyst wants to determine whether stocks in a certain industry group earn either above or ...Certain eggs are stated to have reduced cholesterol content, with an average of only 2.5% cholesterol. A concerned health group wants to test whether the claim is true. The group believes that more cholesterol may be found, ...A large manufacturing firm believes that its market share is 45%. From time to time, a statistical hypothesis test is carried out to check whether the assertion is true. The test consists of gathering a random sample of 500 ...
Post your question