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Grade 31 Statistics and Probability
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z-test-for-a-mean/86448/>The Normal Distribution -
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Test for a Mean
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Question: Which of the following curves represent a normal distribution curve?
A ) Graph 3
B ) Graph 1
C ) Graph 4
D ) Graph 2
Steps to derive
1
A normally distributed curve gets closer to the horizontal axis and symmetric about mean but never touches or crosses it.
2
So, Graph 1 is a normal distribution curve.
Hence the right answer is Option B
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