Question

1) Answer the question True or False. 1) Nonparametric methods focus on the location of the probability distribution, rather than on specific parameters of the population. A) True B) False 2) Nonparametric tests are useful for qualitative data that can be ranked. A) True B) False 3) The sign test provides inferences about the population median rather than the population mean. A) True B) False 4) For a sign test to be valid, a large sample must be selected from a population which is approximately normal. A) True B) False 5) The only assumption necessary to ensure the validity of the sign test is that the probability distribution of measurements is continuous A) True B) False 6) If a distribution is approximately normal, the t-test is a more powerful test about the central tendency of the distribution than the sign test. A) True B) False Solve the problem 7) Fifteen SmartCars were randomly selected and the highway mileage of each was noted. It was desired to determine if the median miles per gallon of all SmartCars exceeded 35 miles per gallon. What type of nonparametric analysis should be used? A) The Friedman Fr-Test B) The Wilcoxon Rank Sum Test C) The Sign Test D) The Wilcoxon Signed Rank Test E) The Kruskal-Wallis H-Test 8) Which of the following is unknown, in general? A) the probability that a randomly selected observation exceeds the median of a normal distribution B) the probability that a randomly selected observation exceeds the mean of a nonnormal distribution C) the probability that a randomly selected observation exceeds the mean of a normal distribution D) the probability that a randomly selected observation exceeds the median of a nonnormal distribution 9) Calculate or use a table to find the binomial probability Px7) when A).035 B).965 C).996 8 and D.5. D).004

Answer 1

1. False

2. True

3. True

4. False