1. Mike scores an 85 on a test that has a standard deviation of 15. His...
1. Mike scores an 85 on a test that has a standard deviation of 15. His z-score is -1.0 so what is the test's mean?
| A. |
Impossible to tell, there's not enough information |
|
| B. |
100 |
|
| C. |
15.87 |
|
| D. |
70 |
2. Jill scores an 82 on a test that has a mean of 76. Her z-score is +1.5 so what is the test's standard deviation?
| A. |
Impossible to tell, there's not enough information |
|
| B. |
4 |
|
| C. |
9 |
|
| D. |
6 |
3. Miranda takes a test that has a mean of 58 and a standard deviation of 10. Her z-score is 2.4 so what is her raw score?
| A. |
Impossible to tell, there's not enough information |
|
| B. |
60.4 |
|
| C. |
34 |
|
| D. |
82 |
Homework Answers
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1. Mike scores an 85 on a test that has a standard deviation of
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Problem 1. 531.1 and standard deviation a-29.4 (2 points) The scores of students on the SAT...
Problem 1. 531.1 and standard deviation a-29.4 (2 points) The scores of students on the SAT colloge entrance examinations at a certain high school had a normal distribution with mean (a) What is the probability that a single student randomly chosen from all those taking the test scores 536 or higher? ANSWER For parts (b) through (d), consider a simple random sample (SRS) of 30 students who took the test (b) What are the mean and standard deviation of the...
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