psychology help??????????

The text indicates that in real life, continuous reinforcement is rare. Sometimes responses are reinforced, sometimes not. Among the most important schedules of partial reinforcement are fixed ratio (FR), variable ratio (VR), fixed interval (FI), and variable interval (VI). Identify the schedule in the examples below by writing your answer—- FR, VR, FI or VI –in the spaces on the left.

____ 1. Buying state lottery ticket and winning

____ 2. A teenager receives an allowance every Saturday

____ 3.Checking the front porch for a newspaper when the delivery person is extremely unpredictable.

____ 4. Calling a garage mechanic to see if your car is fixed yet

____ 5.Checking the oven to see if chocolate chip cookies are done, when baking time is unknown.