# Question

Assume the average time between students walking up to my desk during a statistics exam to ask a question in a desperate attempt to gain some insight into how to solve a problem is 8 minutes and follows the exponential probability distribution.

a. What is the probability that the next desperate student will approach my desk

1. within the next 2 minutes?

2. within the next 4 minutes?

3. between the next 3 to 5 minutes?

4. in more than 10 minutes?

b. Confirm the answers to part a using Excel.

a. What is the probability that the next desperate student will approach my desk

1. within the next 2 minutes?

2. within the next 4 minutes?

3. between the next 3 to 5 minutes?

4. in more than 10 minutes?

b. Confirm the answers to part a using Excel.

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