Question

he graph illustrates the distribution of test scores taken by College Algebra students. The maximum possil he test was 140, while the mean score was 74 and the standard deviation was 15. 29 44 104 119 59 74 89 Distribution of Test Scores Q What is the approximate percentage of students who scored between 29 and 74 on the test? % What is the approximate percentage of students who scored higher than 119 on the test? 1% What is the approximate percentage of students who scored between 44 and 104 on the test? What is the approximate percentage students who scored between 59 and 89 on the test? Get help: Video Video Box 1: Enter your answer as an integer or decimal number. Examples: 3.-4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity Box 2: Enter your answer as an integer or decimal number. Examples: 3.-4.5.5172 Enter DNE for Does Not Exist, oo for Infinity Box 3: Enter your answer as an integer or decimal number. Examples: 3.-4.5.5172 Enter DNE for Does Not Exist, oo for Infinity Box 4: Enter your answer as an integer or decimal number. Examples: 3.-4, 5.5172

Answer 1

왤 Giver, Mear, f = 74 Standard deviation, o = 15 Emperical rule That sag. approximately 68%, 95% and 99.7% slandard deviation of of data values 1, 2 and 3 are within mcan data 16 is normally distributed 347 13.5%. 2.35% 0.15% 2.35% 13.5% oils/ fe + fl +20 +30 f-30 H- 20 104 99 119 447 59 29 a) What is the approximate percentage of sludent scored between 29 and 74 The Test? 2.35 %. +13.5% + 34% 49.85%

b) lalhat in ما با the approximate sludents percentage of scored higher than 119 The O Test ? 0.15% c) lalhat The approximate percenläge of students who scored between 44 and 84 on The test? 13.5% + 34% +34 % + 13.5% 952 who Klhat is the approximate percentage students between 59 and 89 on the test? scored 34% +34 / 68%