Answer these

A new screening test for bowel cancer was administered to 1,945 cases with biopsy-proven diagnosis and to 17,480 without bowel cancer. The new screening test was positive for 1,473 already diagnosed cases and also for 908 individuals who were free of bowel cancer. What percentage of disease free individuals will be correctly identified by the test? (express your answer as percentage with two decimal places) Four different groups of students were classified according to the location at the time of answering the question "Do you know the meaning of life"? Four locations were library, tavern, computing labs and walkways. The respondents had to choose a number from 1 to 5 (1=none of it and 5=all of it). Which test will be suitable for analysis to investigate if response ratings differed significantly between at least two groups. One-way ANOVA Mann-Whitney U test Independent Samples t test OKruskal-Wallis ANOVA Wilcoxon Signed Rank test