Statistics 427 Spring 2006
Name____________________________
Midterm 1 (Rumsey, Goel)
Show all your work for credit and justify your answers. Each problem is worth 5 pts for a
total of 100 points possible.
For problems 15 use the following information. SET UP THE PROBABILITIES
ONLY, DO NOT SOLVE.
An employer has 30 people working on 3 shifts: 1st shift, 2nd shift, and 3rd shift.
She has 8 employees on 1st shift, 10 on second shift, and 12 on third shift.
1.
She decides to randomly select 3 employees of this company to be the president, vice
president, and treasurer of her new special events committee. How many ways are
there to do this?
2.
Suppose 6 employees are to be randomly selected to win prizes at their company
picnic. How many ways are there to do this?
3.
Suppose 6 employees are to be randomly selected to win prizes at their company
picnic. How many ways are there to randomly choose 6 employees to win prizes,
making sure that exactly 2 prizes are given to members of each shift?
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 Spring '09
 Statistics, Probability, Probability theory, Rumsey, Shift work

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