Posted by **Holly** on Friday, February 11, 2011 at 10:35pm.

Please let me know if I solved this right

The lifetime of television produced by the Hishobi Company are normally distributed with a mean of 75 months and a standard deviation of 8 months. If the manufacturer wants to have to replace only 1% of its televisions, what should its warranty be?

P (Z01<0) = 0.5 – 0.01 =.4900 2.33 × 8 =18.64 75 - 18.64 = 56.36 X=56.36

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