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Okay sy mash bumpers I've got another z score Think

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before you find a z score of the value of

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a thousand given a mean of a thousand two point

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six five in a standard deviation of four point nine

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eight Okay we're getting all zied up and that's a

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pretty simple process is long as we have a mean

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a standard deviation and a value to compare to the

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mean what what we're doing when we find a z

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scores finding how far our given value is from the

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mean in units of standard deviation If our value of

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interest is larger than the mean we'll get a positive

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z score if it's less than the main r z

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score will be negative right If our value is equal

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to the meanwhile then z is just zero r value

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of interest here is a thousand while our mean is

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a thousand to sixty five r z score will be

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negative so we've got to see its x minus mean

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there over the sigma that the thousand minus thousand two

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point six five or forty eight got negative two point

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six five over four point nine eight so that gives

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a z score about negative point five three two and

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that means our value is about half a standard deviation

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less than the mean so that's it really answers being 00:01:13.254 --> [endTime] were z shmoop

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