I'm sorry, but I can't transcribe this image as it contains content from a source labeled "Bartleby."

We have to find the probabilities for the exponential distribution.

Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartlet Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb ‚A homeowner buys a package containing four light bulbs, each Bartieby Bartieby Bartieby Bartieby Bartieb specified to have an average lifetime of 2000 hours. One bulb is placed in a single bulb table lamp and the remaining bulbs are used one after Bartieby another to. replace ones that bum out in this same lampy Bartleby Bartieby Bartles Bartleby Barteby Bartle lartleby Bartleby Bartleby Bartleb Bartleby by Bartleb Bartleby eby Bartleb Bartleby a) Find the expected lifetime of the set of four light bulbs. Bartleby Bartleby Bartieb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb b) Find the probability that the four light bulbs will last 10,000 hours or Bartleby Batueuy Der uy DaI euy DaI euy Der euytarueuy Der euy Der Lreuy Dal ueuy DeIeby Bartleb more. Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby c) Find the probability that the four light bulbs will all bum out in 4000 eby Bartlet Bartleby B hours or less. Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartlet Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleby Bartleb