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The mean life of a television set is 123 months with a standard deviation of 19 months.. If a sample of 55 televisions is
The mean life of a television set is 123 months with a standard deviation of 19 months.. If a sample of 55 televisions is randomly selected, what is the probability that the sample mean would be less than 121.8 months? Round your answer to four decimal places. Answer How to enter your answer (opens in new window) Tables Keypad Kouhoard Shortc
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