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Sagot :
Answer:
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Step-by-step explanation:
Using the normal distribution, it is found that x = 3.5 has a z-score of -2, which means that it is 2 standard deviations below the mean.
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In a normal distribution with mean and standard deviation , the z-score of a measure X is given by:
The z-score measures how many standard deviations the measure X is from the mean, above or below.
X∼N(6.5,1.5), which means that .
The measure is
The z-score is:
The measure x = 3.5 has a z-score of -2, which means that it is 2 standard deviations below the mean.
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