Use 68-95-99.7 rule
Scores in a test are normally distributed with a mean of 70 and a standard deviation of 10. What percentage of students scored higher than a 90?
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Question 11 For any normally distributed data: (Write the answers without % sign) A: About what...
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what percent of data is within 1 standard deviation of the mean? B: About what percent of data is within the mean and 2 standard deviations above the mean? C: About what percent of data is more than 2 standard deviations above the mean? Question 12 The scores on a test by a large class are normally distributed. The mean score is 72 with a...
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...
if statistics test scores were normally distributed with a mean of 81 and a standard deviation...
if statistics test scores were normally distributed with a mean of 81 and a standard deviation of 4, a) what is the probability that a randomly selected student scored less than 70? b) what percentage of students had a B on the exam? c) the top 10% of the class had what grades?
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 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...
Answer the following question involving "The Normal Distribution and the 68-95-99.7 Rule" and show how I...
Answer the following question involving "The Normal Distribution and the 68-95-99.7 Rule" and show how I got the answers below. Answers: 1)a) 68% b) 47.5% c) 2.5% 2) 12 or 13 people Questions: 1) A population of dogs have weights that are normally distributed with an average of 30 pounds with a standard deviation of 3 pounds. a) What percent of the dogs weigh between 27 and 33 pounds? b) What percent of the dogs weigh between 30 and 36...
The mean score of a college entrance test is 500
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 ?
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 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...
miben so with the 68-95-99.7 Rule) on the included normal distribution 1. Suppose exam scores form...
miben so with the 68-95-99.7 Rule) on the included normal distribution 1. Suppose exam scores form an approximately normal distribution that has 500 points and 100 points. Letter grades on the exam were distributed as follows: Ds made up 15% of the exam, Ca 59%, Bs 13.5%, As 2.5%, and the rest Fs. () If 1466 students scored 733 points or more, how many students took the exam? students (b) What are the point cutoffs for each letter grade? <A...
t Enter a number rounded to one decimal if necessary. The scores of this test are...
t
Enter a number rounded to one decimal if necessary. The scores of this test are normally distributed with a mean of 81 and a standard deviation of 6. Then A/ percent of the students scored 75 or lower, percent of the students scored between 75 and 87, and 18 A percent of the students scored 81 or higher.
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 140, while the mean score was 79 and the standard deviation was 15. 34 49 64 79 94 109 124 Distribution of Test Scores What is the approximate percentage students who scored between 64 and 94 on the test? What is the approximate percentage of students who scored lower than 34 on the test? What is the approximate percentage...
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what percent of data is within 1 standard deviation of the mean? B: About what percent of data is within the mean and 2 standard deviations above the mean? C: About what percent of data is more than 2 standard deviations above the mean? Question 12 The scores on a test by a large class are normally distributed. The mean score is 72 with a...
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 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...
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...
miben so with the 68-95-99.7 Rule) on the included normal distribution 1. Suppose exam scores form an approximately normal distribution that has 500 points and 100 points. Letter grades on the exam were distributed as follows: Ds made up 15% of the exam, Ca 59%, Bs 13.5%, As 2.5%, and the rest Fs. () If 1466 students scored 733 points or more, how many students took the exam? students (b) What are the point cutoffs for each letter grade? <A...
t
Enter a number rounded to one decimal if necessary. The scores of this test are normally distributed with a mean of 81 and a standard deviation of 6. Then A/ percent of the students scored 75 or lower, percent of the students scored between 75 and 87, and 18 A percent of the students scored 81 or higher.
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 79 and the standard deviation was 15. 34 49 64 79 94 109 124 Distribution of Test Scores What is the approximate percentage students who scored between 64 and 94 on the test? What is the approximate percentage of students who scored lower than 34 on the test? What is the approximate percentage...
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