RISKBIMONIAL function from Palasades @RISK for pooling and not pooling?

moe10134

Board Regular
Joined
Sep 8, 2005
Messages
162
Office Version
  1. 2019
Platform
  1. Windows
The Business School at State University currently has three parking lots, each containing 155 spaces. Two hundred faculty members have been assigned to each lot. On a peak day, an average of 70% of all lot 1 parking sticker holders show up, an average of 72% of all lot 2 parking sticker holders show up, and an average of 74% of all lot 3 parking sticker holders show up.

a. Given the current situation, estimate the probability that on a peak day, at least one faculty member with a sticker will be unable to find a spot. Assume that the number who show up at each lot is independent of the number who show up at the other two lots. Compare two situations: (1) each person can park only in the lot assigned to him or her, and (2) each person can park in any of the lots (pooling). (Hint: Use the RISKBINOMIAL function.) If needed, round your answer to a whole percentage and if your answer is zero, enter "0".
 

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shg

MrExcel MVP
Joined
May 7, 2008
Messages
21,829
Office Version
  1. 2010
Platform
  1. Windows
I dunno anything about @Risk, but ...

A​
B​
C​
1​
Prob(show)
Prob(no spot)
2​
70%​
0.72%​
B2: =1 - BINOM.DIST(155, 200, A2, TRUE)
3​
72%​
3.28%​
4​
74%​
11.20%​
 
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