Statistics 200 Exam 1
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View Full Document1.
A company has 20 female workers whose average salary is $43,000 and 30 male
workers whose average salary is $47,000.
(a) What is the average salary for all 50 workers, or can this be determined?
(20*43000 + 30*47000)/50 = 0.4*43000 + 0.6*47000 = $45,400
(b) Among the female workers, 10 are younger than 35 years old and 10 are 35 or older.
Among the male workers, 10 are younger than 35 years old and 20 are 35 or older. If a
worker is selected at random what is the probability the worker is a female aged 35 or
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 Spring '09
 Agniel
 Statistics, Standard Deviation, voter registration, $43,000, $45,400

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