In a distribution of 150 test scores, the mean grade was an 82 and the standard deviation was 8. If a student scored a 93, what would their equivalent Z score be? a. 1.13 b. -1.38 c. 0.68 d. 1.38
Added by Raymond W.
Step 1
Step 1: Identify the given values in the problem: - Mean (\(\mu\)) = 82 - Standard deviation (\(\sigma\)) = 8 - Student's score (\(X\)) = 93 Show more…
Show all steps
Close
Your feedback will help us improve your experience
Ahmet Yavas and 96 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
'On a standardized test, Sara had a score of 93, which was exactly 2 standard deviations above the mean. If the standard deviation for the test is 5, what is the mean score for the test? 95 b. 88 98 d. 83'
Pritesh R.
A test score has a mean of 452 and a standard deviation of 80. a. What test score corresponds to a z-score of -1.80? b. What test score corresponds to a z-score of 1.50?
Narayan H.
Scores on a math test have average of 85 with standard deviation of 10. What is the z-score for a student who earned a 90 on the test?
Amine Y.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD