The life of a Radio Shack record player is normally distributed with a mean of 4 years and a standard deviation of 1.1 years. Radio Shack guarantees its record players for 2 years. (a) Find the probability that a record player will last less than 2 years? % (b) Find the probability that a record player will last more than 4 years? Submit Question
The life of a Radio Shack record player is normally distributed with a mean of 4 years and a standard deviation of 1.1 years. Radio Shack guarantees its record players for 2 years. (a) Find the probability that a record player will last less than 2 years? % (b) Find the probability that a record player will last more than 4 years? Submit Question
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:The life of a Radio Shack record player is normally
distributed with a mean of 4 years and a standard
deviation of 1.1 years. Radio Shack guarantees its
record players for 2 years.
(a) Find the probability that a record player will
last less than 2 years?
%
(b) Find the probability that a record player will
last more than 4 years?
Submit Question
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