Server Kitchen worker Male Female Male Female Not hired 80 120 Not hired 30 15 H
ID: 3327107 • Letter: S
Question
Server
Kitchen worker
Male
Female
Male
Female
Not hired
80
120
Not hired
30
15
Hired
20
50
Hired
80
25
The proportion of female hires who are servers is
0.800.
Applicants looking for a job at a restaurant chain may apply to be a server or kitchen worker. The table below summarizes the numbers of male and female applicants hired for the jobs for which they applied.Server
Kitchen worker
Male
Female
Male
Female
Not hired
80
120
Not hired
30
15
Hired
20
50
Hired
80
25
The proportion of female hires who are servers is
0.800.
Which set of four numbers has the smallest standard deviation? 7, 8, 9, 10 5, 5, 5, 6 0, 0, 10, 10 0, 1, 2, 3Explanation / Answer
Proportion of female hires who are servers = Number of female hires who are servers/Number female hires
= 50/(50+25)
= 0.667
5,5,5,6 has smallest standard deviation (because the mean is 5.25 and all numbers are close to the mean)
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