You try to unlock your phone using your face ID. If an attempt fails, you wait 2 seconds before trying again, This continues until the attempt succeeds and the phone unlocks. An attempt succeeds with probability 0.9, find the mean waiting time before the phone unlocks. O a 2.2222 sec O b. 1.1111 sec OC 33333 sec O d. 0.1111 sec O e. 0.2222 sec

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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You try to unlock your phone using your face ID. If an attempt fails, you wait 2 seconds before trying again, This continues until the
attempt succeeds and the phone unlocks. An attempt succeeds with probability 0.9, find the mean waiting time before the phone
unlocks.
of
O a 2.2222 sec
stion
O b. 1.1111 sec
Oc 3.3333 sec
O d. 0.1111 sec
O e. 0.2222 sec
Transcribed Image Text:You try to unlock your phone using your face ID. If an attempt fails, you wait 2 seconds before trying again, This continues until the attempt succeeds and the phone unlocks. An attempt succeeds with probability 0.9, find the mean waiting time before the phone unlocks. of O a 2.2222 sec stion O b. 1.1111 sec Oc 3.3333 sec O d. 0.1111 sec O e. 0.2222 sec
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