Q.
1
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A
Mean, Median and Mode always coincide
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B
Within + 1.96 σ limits from mean value, the area under the distribution is 99 percent of the total area.
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C
The area under the normal curve represents probabilities for the normal random variable and the total area for the normal probability distribution is one.
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D
For every pair of values of Mean and Standard deviation, the curve of the distribution is bell-shaped and symmetric