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In a sample with a mean of 74 and a standard deviation of 7, the probability of randomly selecting a score below 62 is - .043

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Answer #1

Solution :

Given that ,

mean =  \mu = 74

standard deviation = σ   = 7

P(X< 62) = P[(X- \mu ) / σ   < (62-74) / 7]

= P(z <-1.71 )

Using z table

= 0.0436

probability =0.0436

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