Standard Deviation and Distribution

Quiz
•
Mathematics
•
11th Grade
•
Hard
Anthony Clark
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
On a standardized exam, the scores are normally distributed with a mean of 48 and a standard deviation of 5. Find the z-score of a person who scored 38 on the exam.
-1
-2
-3
0
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
On a standardized exam, the scores are normally distributed with a mean of 140 and a standard deviation of 20. Find the z-score of a person who scored 140 on the exam.
0
1
2
-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Based on the normal distribution curve in the picture, what is the mean and the standard deviation of the data?
50 and 5
50 and -5
55 and 5
55 and -5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Standard deviation tells us...
the spread of the data
the average of the data
the range of the data
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When Avani goes bowling, her scores are normally distributed with a mean of 145 and a standard deviation of 12. Using the empirical rule, determine the interval that would represent the middle 68% of the scores of all the games that Avani bowls.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When Julia goes bowling, her scores are normally distributed with a mean of 200 and a standard deviation of 14. Using the empirical rule, what percentage of the games that Julia bowls does she score between 158 and 242?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a certain population, the mean score on a test is 420. The standard deviation is 105. If the distribution of scores is normal, which of these scores should occur most often?
526
540
314
385
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