Provide an appropriate response. A manufacturer claims that the mean lifetime of its fluorescent bulbs is 1000 hours. A homeowner suspects that it is less than that. She selects 40 bulbs and finds the mean lifetime to be 980 hours with a standard deviation of 80 hours. If α = 0.01, test the manufacturer's claim using P-values.

Define
Hypotheses
Justify
Test statistic
Pvalue
Conclusion

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Step-by-step explanation:

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

the answer is a if my teacher taught me correct