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Let the mean and the standard deviation of the probability distribution [figure] be and , respectively. If - = 2, then + is equal to .
5
P = 1 13 + K + 16 + 14 = 1 K = 14
= 3 + 14 + 0 - 34 = 3 - 12, x2P = 23 + 14 + 94 = 23 + 52
2 = x2P - 2 and = + 2:
23 + 52 = ( 3 - 12 )2 + ( 3 + 32 )2 = 2 29 + 2 3 + 52
29 = 2 3 = 0 or 6; = 0 is rejected ( the value 0 of X is already listed)
= 6 = 32, = 72 + = 5
Answer: 5
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