Forecasters' interest rate predictions over an eight-year period were studied to see whether the predictions corresponded to what actually happened. The 2 × 2 contingency table below shows the frequencies of actual and predicted interest rate movements. Research question: At α = .10, is the actual change independent of the predicted change?
Answer to relevant QuestionsIn a study of childhood asthma, 4,317 observations were collected on education and smoking during pregnancy, shown in the 4 × 3 contingency table below. Research question: At α = .005, is smoking during pregnancy ...A survey of 189 statistics students asked the age of car usually driven and the student's political orientation. The car age was a numerical variable, which was converted into ordinal categories. Research question: At α = ...The table below shows the number of ATM customer arrivals per minute in 60 randomly chosen minutes. Research question: At α = .025, can you reject the hypothesis that the number of ATM arrivals per minute follows a Poisson ...Refer back to Table 15.11, which shows the distribution of the number of U.S. Supreme Court appointments per year from 19001999. Since 1999 there have been four Supreme Court appointments with one each in the years 2005, ...JavaMax is a neighborhood take-out coffee shop that offers three sizes. Yesterday's sales are shown. Use MegaStat or another software package to perform a Friedman test to see whether the median sales of coffee sizes differ ...
Post your question