Bob got an 85 on a test. His class had a mean score of 80 with...

Question

Question

Bob got an 85 on a test. His class had a mean score of 80 with a standard deviation of 3. Mary got a score of 79 on a test. H

Answer 1

Answer #1

80. Bob got 85 on a test mean score = SD 3 son Z-score = -1.67 His; 85-80 3 79 score Margy got an on a tell Here mean scorc:

for further query please comment below.thank you

Answer 2

Similar Homework Help Questions

Raul received a score of 73 on a history test for which the class mean was...

Raul received a score of 73 on a history test for which the class mean was 70 with a standard deviation of 4. He received a score of 72 on a biology test for which the class mean was 70 with standard deviation 7. On which test did he do better relative to the rest of the class?
Raul received a score of 62 on a history test for which the class mean was...

Raul received a score of 62 on a history test for which the class mean was 52 with standard deviation 5. He received a score of 77 on a biology test for which the class mean was 72 with standard deviation 5. On which test did he do better relative to the rest of the class?
Raul received a score of 77 on a history test for which the class mean was...

Raul received a score of 77 on a history test for which the class mean was 70 with a standard deviation of 10. He received a score of 80 on a biology test for which the class mean was 70 with standard deviation 6. On which test did he do better relative to the rest of the class? biology test history test the same

Raul received a score of 77 on a history test for which the class mean was...

Raul received a score of 77 on a history test for which the class mean was 70 with a standard deviation of 3. He received a score of 76 on a biology test for which the class mean was 70 with standard deviation 4. On which test did he do better relative to the rest of the class? biology test history test the same
Raul received a score of 71 on a history test for which the class mean was...

Raul received a score of 71 on a history test for which the class mean was 70 with a standard deviation of 5. He received a score of 74 on a biology test for which the class mean was 70 with standard deviation 5. On which test did he do better relative to the rest of the class? biology test history test the same
In class A, the mean score on a math exam was 85. In class B, the...

In class A, the mean score on a math exam was 85. In class B, the mean score on the same test was 75. There were 30 students in each class. The scores in class A ranged from 83 through 87, whereas the score. in class B ranged from 45 through 100. Which of the following is an appropriate conclusion that can be drawn from the information given above? res The standard deviation of scores was higher in class B....

3. Calculate the Z score, given x 55,0-2.5, and -28 Ans: 4. Calculate x , given...

3. Calculate the Z score, given x 55,0-2.5, and -28 Ans: 4. Calculate x , given ze-1.45, σ 30.5, and μ-40 Ans: 5. A student scores 74 on a geography test and 282 on a mathematics test. The geography test has a mean of 80 and a standard deviation of 5. The mathematics test has a mean of 300 and a standard deviation of 12. If the data for both tests are normally distributed, on which test did the student...
3. A high school with 1200 students is placing students with an IQ score of 130...

3. A high school with 1200 students is placing students with an IQ score of 130 and above in an accelerated class. A standardized IQ test has a mean of 100 and a standard deviation of 15. Assuming a normal population, approximately how many students will be assigned to the accelerated class? 4. A reading test has a mean of 30 and a standard deviation of 5. A math test has a mcan of 50 and a standard deviation of...
A class has 100 students. Each student's score is a random variable with mean 85 and...

A class has 100 students. Each student's score is a random variable with mean 85 and standard deviation 40. Use the CLT to approximate the preability that the class average score is below 80.

Everyone in the class takes a test and receives a score, and the average is calculated....

Everyone in the class takes a test and receives a score, and the average is calculated. Everyone compares their test score to the average test score, and each person’s distance from the mean test score is their deviation. People who had really low test scores or really high test scores will have large distances, or deviations, from the mean, while people who had test scores that were similar to the mean will have small distances, or deviations. If a person’s...