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Question: using information from the picture what is the longest time...

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Using information from the picture, what is the longest time required to pack and box one system with probability 0.95?
Packaging Stereos Consider the company that manufactures and ships small stereo systems that we discussed previously If the time required to pack the stereos can be described by a Normal distribution, with a mean of 9 minutes and standard deviation of 1.5 minutes and the times for the boxing stage can also be modeled as Normal, with a mean of 6 minutes and standard deviation of I minute, what is the probability that packing an order of two systems takes over 20 minutes? What percentage of the stereo systems takes longer to pack than to box?
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