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21. [0/3 Points] DETAILS PREVIOUS ANSWERS HARMATHAP12 13.2.069. MY NOTES PRACTICE ANOTHER The duration (in minutes) of customer service calls received by a certain

21. [0/3 Points] DETAILS PREVIOUS ANSWERS HARMATHAP12 13.2.069. MY NOTES PRACTICE ANOTHER The duration (in minutes) of customer service calls received by a certain company is given by the following probability density function. (Round your answers to four decimal places.) 0.26 0.31, t20 t) (a) Find the probability that a call selected at random lasts 3 minutes or less x (b) Find the probability that a call selected at random lasts between 7 and 12 minutes (c) Find the probability that a call selected at random lasts 3 minutes or less given that it lasts 7 minutes or less Need Help?

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