What are the probabilities using the exponential density function.

Find the required probabilities using the exponential density function for) = %esf/l, [0, 00). The waiting time t (in minutes) for service at the checkout at a grocery store is exponentially distributed with A = 4. Find the probabilities of waiting less than 3 minutes, more than 3 minutes but less than 5 minutes, and at least 3 minutes. (Round your answers to three decimal places.) (a) less than 3 minutes :I (b) more than 3 minutes but less than 5 minutes :I (c) at least 3 minutes E