
Normal Distributions and Central Limit Theorem
Authored by Anthony Clark
Mathematics
12th Grade

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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally distributed. What is the probability that a randomly selected student is older than 16.5 years old?
0.864
0.879
0.121
None of these
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mean of the sample means is equal to the mean of the population.
True
False
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
These symbols represent the mean and standard deviation for which of the following distributions?
The Population
The Sample
The Sampling Distribution
The Parameter
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the area of the shaded region if the z-score is -0.3
0.6179
0.488
0.3783
0.3821
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
These symbols represent the mean and standard deviation for which of the following distributions?
The Population
The Sample
The Sampling Distribution
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the mean of the sampling distribution?
400
40
25
8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the standard deviation of the sampling distribution?
400
40
25
8
5
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