Statistics Concepts Normal Distribution
Authored by Anthony Clark
Mathematics
12th Grade
Used 1+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What shape is a normal distribution curve?
Half curve
Round curve
Bell curve
Square curve
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The normal curve is symmetrical about the mean.
True
False
3.
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 12 and 15 days?
68%
34%
16%
2.5%
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
According to the empirical rule, what percentage of data falls within 1 standard deviation of the mean?
25%
68%
95%
99.7%
5.
DRAG AND DROP QUESTION
1 min • 10 pts
The monthly income of 5000 workers at the Microsoft plant are distributed normally. Suppose the mean monthly income is $1250 and the standard deviation is $250.
Creating a normal distribution curve shows that the amount of workers who earn more than $1500 per month is (a)
800 workers
125 workers
81.5% of workers
97.5% of workers
6.
DRAG AND DROP QUESTION
1 min • 10 pts
The monthly income of 5000 workers at the Microsoft plant are distributed normally. Suppose the mean monthly income is $1250 and the standard deviation is $250.
Creating a normal distribution curve shows that the percentage of workers who earn less than $1750 per month is (a)
800 workers
125 workers
81.5% of workers
97.5% of workers
7.
DRAG AND DROP QUESTION
1 min • 10 pts
The monthly income of 5000 workers at the Microsoft plant are distributed normally. Suppose the mean monthly income is $1250 and the standard deviation is $250.
Creating a normal distribution curve shows that the percentage of workers who earn between $750 and $1500 per month is (a)
800 workers
125 workers
81.5% of workers
97.5% of workers
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