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Use the following question to answer Parts 1 - 4 A manufacturer claims that the mean lifetime of florescent bulbs is 9 5 0 hours.
Use the following question to answer Parts
A manufacturer claims that the mean lifetime of florescent bulbs is hours. A homeowner selects bulbs and finds the mean lifetime to be hours with standard deviation of hours. Test the manufacturer's claim. Use
Step I Hypothesis
Ho: claim
:
Ho: claim
:
:
: claim
Ho: claim
:
Part
Step II: Calculate the value for the Test Statistics
Step III Find the critical values to the rejection region
Part
Fill in the blanks:
Step IV: Conclusion
Part
At level of the significance,
we
There enough evidence to support the claim.
reject, is
fail to reject, is
fail to reject, is not
reject, is not
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