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classwork - 5a-5b

# classwork - 5a-5b - ClassWork#3(Sections 5A 5B(10 pts Name...

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ClassWork #3 (Sections 5A & 5B)  (10 pts) Name________________________________  MULTIPLE CHOICE.  Choose the one alternative that best completes the statement or answers the question.  Solve the problem.  1)

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For the  study  described  below,  identify  the  sample  statistic. manufact urer of  light  bulbs  wants to  determine  the  average  lifetime of  its 75 - watt light  bulbs.  Among  120  randomly  selected  75 - watt  light  bulbs, the  average  lifetime  was 1007  hours.
1)

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_______  A)
The 120  randomly selected   75 - watt light bulbs  B)

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120, the number of light bulbs in the sample   C)
The average  lifetime of the 120 randomly selected   75 - watt light bulbs  D)

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The average  lifetime of all 75 - watt light bulbs manufactured by the company    2)
For the  study  described  below,  identify  the  populatio parameter . researcher  is  interested  in the  level of  stress  among  emergenc y - room  nurses in  the U.S.  275  emergenc y - room  nurses  were  interview ed to  determine  their level  of stress.  Each  nurse was  assigned a  stress  rating  based on  his or her  answers  to a  number of  questions.  The  average  stress  rating for  the 275  nurses  was  determined.

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