document.write( "Question 1055096: A survey found that people keep their televisions an average of 4.2 years. The standard deviation is 0.86 year. If a person decides to buy a new TV, find the probability that he or she owned the old one for the given amount of time. Assume the random variable is normally distributed \n" ); document.write( "

Algebra.Com's Answer #670482 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
If I understand your question, you want to set up a normal distribution with $\"mu=4.2\"$ and $\"sigma=0.86\"$ and then want to find the probability for $\"x=4.2\"$ .
\n" ); document.write( "If so, that would be a z-score of $\"z=0\"$ , so $\"P=0.5\"$ .
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