Standard Deviation and Normal Distribution
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Anthony Clark
FREE Resource
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mean life of a tire is 30,000 km. The standard deviation is 2000 km.
Then, 68% of all tires will have a life between ___________ km and __________ km.
28,000 km and 32,000 km.
24,000 km and 34,000 km.
26,000 km and 34,000 km.
27,000 km and 31,000 km.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.
About what percent of the products last between 6 and 18 days?
68%
95%
99%
2.5%
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What shape is another name for a normal distribution?
Half curve
Round curve
Bell curve
Square curve
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
50% of the females are above what height?
5'3"
5'8"
5'9.5"
5'11"
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What percentage of females are between 5'3.5" and 5'6.5"?
16%
68%
81.5%
95%
6.
MULTIPLE CHOICE QUESTION
1 min • 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 3.5?
81.5%
47.5%
68%
95%
7.
MULTIPLE CHOICE QUESTION
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
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