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A survey found that people keep their televisions an average of 5.1 years. The standard deviation is 0.85 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.

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Answer:


P(x<4.4)=0.50

Explanation:

From the question we are told that:

Mean
\=x =5.1 year

Standard deviation
\sigma=0.85

Generally the equation for Z value is mathematically given by


Z = (4.4 - 4.4) / 0.73


Z= 0

Therefore

From table


P(x<4.4)=0.50

User Adrian Ribao
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