A firm uses trend projection and seasonal factors to simulate sales for a given time period. It assigns "0" if sales fall, "1" if sales are steady, "2" if sales rise moderately, and "3" if sales rise a lot. The simulator generates the following output. 0 1 0 2 0 0 0 1 0 3 2 0 0 0 0 2 1 2 3 1 2 0 2 0 3 0 0 2 1 0 1 Estimate the probability that sales will rise moderately.   a 0.258   b 0.233   c 0.312   d 0.226

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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A firm uses trend projection and seasonal factors to simulate sales for a given time period. It assigns "0" if sales fall, "1" if sales are steady, "2" if sales rise moderately, and "3" if sales rise a lot. The simulator generates the following output.

0 1 0 2 0 0 0 1 0 3 2 0 0 0 0 2 1 2 3 1 2 0 2 0 3 0 0 2 1 0 1

Estimate the probability that sales will rise moderately.
  a
0.258
  b
0.233
  c
0.312
  d
0.226
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