f20_180a_practice_midterm2_SOLUTIONS.pdf - MATH 180A...

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MATH 180A - INTRODUCTION TO PROBABILITY PRACTICE MIDTERM 2 FALL 2020 Write your name and PID on the top of EVERY PAGE. Write the solutions to each problem on separate pages. CLEARLY INDICATE on the top of each page the number of the corresponding problem. Different parts of the same problem can be written on the same page (for example, part (a) and part (b)) Remember this exam is graded by a human being. Write your solutions NEATLY AND COHERENTLY, or they risk not re- ceiving full credit. From the moment you access the midterm problems on Grade- scope you have 70 MINUTES to COMPLETE AND UPLOAD your exam to Gradescope. Plan your time accordingly. You are allowed to use the textbook, lecture notes and your personal notes. You are not allowed to use the electronic devices (except for accessing the online version of the textbook) or outside assistance. Outside assistance includes but is not limited to other people, the internet and unauthorized notes. This exam is property of the regents of the university of Cal- ifornia and not meant for outside distribution. If you see this exam appearing elsewhere, please NOTIFY the instructor at yne- [email protected] and the UCSD Office of Academic Integrity at [email protected] 1
2 FALL 2020 1. Suppose that the time it takes for you to complete your probability homework is dis- tributed according to an exponential random variable with mean 1 hour.

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