Normal Distribution
Assessment
•
Sheri Eastman
•
Mathematics
•
9th Grade - University
•
1K plays
•
Medium
Student preview
16 questions
Show answers
1.
Multiple Choice
2 mins
1 pt
In a survey of men in the United States (ages 20-29), the mean height was 69.6 inches with a standard deviation of 3.0 inches. Find the minimum height in the top 22%.
69.37 in
67.58 in
73.12 in
2.
Multiple Choice
1 min
1 pt
The 40 yards sprint times for a soccer team are found to be normally distributed with a mean of 5.2 seconds and a standard deviation of 0.3 seconds. What is the z-score for a player who runs a time of 5.6 seconds?
-1.33
1.33
0.88
1.02
3.
Multiple Choice
5 mins
1 pt
The 40 yards sprint times for a soccer team are found to be normally distributed with a mean of 5.2 seconds and a standard deviation of 0.3 seconds. What is the z-score for a player who runs a time of 4.6 seconds?
0.83
1.07
-2
-1.07
4.
Multiple Choice
1 min
1 pt
The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have less than 5 accidents?
0.6915
0.1762
0.8238
-0.93
5.
Multiple Choice
5 mins
1 pt
The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have more than 7 accidents?
0.3446
0.2856
0.4
0.6554
6.
Multiple Choice
5 mins
1 pt
The mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between 2.9 and 3.8?
81.5%
47.5%
68%
95%
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