SOLUTION: A survey found that people keep their television sets an average of 5.8 years with standard deviation of 2.7 years and also that the data was approximately normally distributed. Ca

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Question 868729: A survey found that people keep their television sets an average of 5.8 years with standard deviation of 2.7 years and also that the data was approximately normally distributed. Calculate the probability that a person who has decided to buy a new television set has owned the old one
a. more than 8.9 years. b. between 2.6 and 7.4 years.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
a) normalcdf(8.9,100, 5.8, 2.7) |100 a placeholder
b) normalcdf(2.6,7.4, 5.8, 2.7)