Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below. Frankie got a score of 71.1; this version has a mean of 64.5 and a standard deviation of 11. Kerri got a score of 233.8; this version has a mean of 217 and a standard deviation of 24. Brittany got a score of 8; this version has a mean of 7.2 and a standard deviation of 0.4. If the company has only one position to fill and prefers to fill it with the applicant who performed best on the aptitude test, which of the applicants should be offered the job?
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Step 1
The z-score is calculated using the formula: z = (x - μ) / σ where x is the individual score, μ is the mean, and σ is the standard deviation. For Frankie: z = (71.1 - 64.5) / 11 z = 6.6 / 11 z = 0.6 For Kerri: z = (233.8 - 217) / 24 z = 16.8 / 24 z = 0.7 Show more…
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