BITnote - 1-(1/2.5^2)=84% ANS:________________________ c....

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BIT 2/3/09 Bell shaped curve Annual salaries for sales associates Mean is 32,500 Standard deviation of 2,500 z-score for 37,500 37,000-32,500/2,500=2 28,000-32,500/2,500 =-1.8 In-class Problems- February 3 Suppose annual salaries for sales associates from a particular store have a mean of $32,500 and a standard deviation of $2,500. a. Calculate and interpret the z -score for a sales associate who makes $36,000. 36,000-32,500/2500=1.4 ANS:________________________ b. Use Chebyshev's theorem to calculate the percentage of sales associates with salaries between $26,250 and $38,750. (assuming nothing is known about the distribution) 26250-32500/2500=-2.5 38750-32500/2500=2.5
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Unformatted text preview: 1-(1/2.5^2)=84% ANS:________________________ c. Suppose that the distribution of annual salaries for sales associates at this store is bell-shaped . Use the empirical rule to calculate the percentage of sales associates with salaries between $27,500 and $37,500. 27,500-32500/2500=-2 37,500-32500/2500=2 95%(find using graph) ANS:________________________ d. Still suppose that the distribution of annual salaries for sales associates at this store is bell-shaped. A sales associate makes $42,000. Should this salary be considered an outlier? Explain. 42,000-32500/2500=3.8 Yes it is greater than 3 ANS:________________________...
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