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Statistics
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A company is criticized because only 14 of 47 executives at a local branch are women.Although this proportion is lower than it might wish,it's not surprising given that only 36% of employees are women.It has 500 executives worldwide.What is z value?

Mar 7th, 2015

14/47=0.2978723

p =0.36

1-p =0.64

Standard deviation of p = sqrt(0.36*0.64/500) = 0.021466

z value = (0.278723-0.36)/0.021466 = -2.894201 = -2.89

If we use 0.30 for 14/47

Then

z value = (0.30-0.36)/0.021 = -2.85


Mar 8th, 2015

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Mar 7th, 2015
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