The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible...
The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 130, while the mean score was 77 and the standard deviation was 13. 38 51 64 77 90 103 116 Distribution of Test Scores What is the approximate percentage of students who scored higher than 103 on the test? % What is the approximate percentage of students who scored between 64 and 77? % What is the approximate percentage...
The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 140, while the mean score was 71 and the standard deviation was 15. 1. What is the approximate percentage of students who scored higher than 101 on the test? 2. What is the approximate percentage of students who scored between 41 and 101 on the test? 3. What is the approximate percentage of students who scored lower than 26...
The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 120, while the mean score was 79 and the standard deviation was 8. 55,63,71,79,87,95,103 Distribution of Test Scores What is the approximate percentage of students who scored between 79 and 103 on the test? % What is the approximate percentage of students who scored lower than 55 on the test? % What is the approximate percentage of students who...
The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 140, while the mean score was 75 and the standard deviation was 15. 30 45 105 120 60 75 90 Distribution of Test Scores Using the Empirical Rule, What is the approximate percentage of students who scored between 45 and 105 on the test? % What is the approximate percentage of students who scored higher than 105 on the...
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...
This year the test scores of all students in a college algebra course is normally distributed with a mean of 75 and a standard deviation of 10. Only the best 5% of the students will receive an A. What is the minimum score a student must obtain to get an A?
College algebra students believe that the mean score on the first weekly test is 73. A statistics instructor thinks the mean score is higher than 73. He samples ten statistics students and obtains the scores 70; 65; 73; 68; 81; 82; 71; 67; 74; 82. He performs a hypothesis test using a 5% level of significance. The data are assumed to be from a normal distribution. a) Use a calculator function (Ttest / Ztest) to compute the p-value. (5 points)...
When examining the test distribution of scores, a professor finds that there is one student in the first quartile (Q 1 ). That means that the one student a. scored higher than 24.99% of the people who took the test b. the distribution of the scores is skewed o the student's score is the same as the value of the median of the distribution d. the student scored higher than 74.99% of the people who took the test
The scores of individual students on the American College Testing (ACT) composite college entrance examination have a normal distribution with mean 17.3 and standard deviation 5.4. (a) What is the probability that a single student randomly chosen from all those taking the test scores 25 or higher? (b) Now take an SRS of 67 students who took the test. What are the mean and standard deviation of the average (sample mean) score for the 67 students? μ = σ =...
The mean score of a college entrance test is 500 ; the standard deviation is 75 . The scores are normally distributed.a)What percent of the students scored below 320 ?b) What percentage of the students scored above 575 ?c) What percentage of the students scored between 400 and 550 ?