True or False. When performing a Mann-Whitney U test one should always use the higher value of the calculated U values to compare to the critical U value while making the decision rule.
True or False. When performing a Mann-Whitney U test one should always use the higher value...
Skewness and kurtosis should not be tested when using the chi-square test of independence. True or False The major difference between the Mann-Whitney U-test and the Kruskal-Wallis H test is the number of independent variables. True or False
-It would not be appropriate to use the Mann–Whitney U test when: a researcher is comparing two independent populations. the dependent variable is measured at the ordinal level. the assumptions for an independent-samples t test are not met. a researcher is comparing three or more groups on a normally distributed dependent variable. -Kia assesses people's levels of gratitude and stress that occur naturally to determine if a relationship exists between the two variables. Kia is using a(n): correlational design experimental...
A. Nonparametric Test B. Parametric Test 1. Mann-Whitney U-test a. Paired t-test 2. Friedman test b. One-way ANOVA 3. Kruskall-Wallis test c. Independent groups t-test 4. Wilcoxon signed-ranks test d. Repeated measures ANOVA 7. (1 pt)Using the information provided, indicate which statistical test you think should be used for each of the following situations (a-d): Independent variable: normal birth weight vs. low birth weight infants; dependent variable: breathing rate (in breaths per minute). Independent variable: time of measurement of same...
prior info needed to answer question A) True B) False 6) When performing a hypothesis test on the mean w, we use a z-test when the population standard deviation is known. A) True B) False 7) When performing a hypothesis test on the mean , we use a t-test when the population standard deviation is not known. A) True B) False Use the following for #'s 8-14 Marc wants to know if the mean age of the prison population in...
11. What statistical test would be appropriate to use when assessing the relationship between different cultures (i.e., Italian, Indian, German, American, and Mexican) and the spice levels in their food? Mann-Whitney U T-test ANOVA (Analysis of Variance) Chi-square test of independence a. b. c. d. 12. Confounding is said to be present in a study where the crude measurement of odds ratio is 2.0, and the adjusted measure is 1.85. a. True b. False c. Insufficient information 11. What statistical...
) A sample of 15 graduating students, 15 females and 5 males, was randomly selected. Their GPAs were recorded, and the ranks of these GPAs for the pooled sample are presented below. Test the following hypothesis: H0: There is no difference in GPAs between the genders? Use the Mann-Whitney test. Males Females 11 1 12 2 3 13 14 4 6 5 15 7 8 9 10 Calculated test statistic: Critical value of the test statistic: Decision rule: Decision:
The value of a forward contract is always equal to $0. True False When one agrees on a forward contract, the buyer pays the forward price to the seller today. True False When 3-month LIBOR is expected to rise, Eurodollar futures price will decrease. True False To protect against future short-term interest rate decrease, a bank should long Eurodollar futures today. True False
True or false The practical significance of a decision rejecting the null hypothesis should always be considered with every statistical test outcome.
True or false? When the population variances are known, the test statistic that we use to compare two population means using two independent samples follows the standard normal distribution. True or false? A paired t-test with two columns of 8 observations in each column should use d.f =7
Choosing a higher discount rate decreases the calculated future value. Select one: True False