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suppose X is a normally distributed random variable with a mean of 9.00. If the probability...

suppose X is a normally distributed random variable with a mean of 9.00. If the probability that X is less than 9.66 is 0.67, then what is the standard deviation of X?

Math   Statistics-And-Probability   
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Answer #1

Refer Standard normal table/Z-table, Lookup for z-score corresponding to area 0.67 to the left of the normal curve.
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