X-Git-Url: https://code.communitydata.science/stats_class_2019.git/blobdiff_plain/94e323497df92322a9e05f1c820a38fb56e38b39..50724a2c34177958219ec7244ed70c017ae94dab:/problem_sets/week_03/ps3-worked_solution.html diff --git a/problem_sets/week_03/ps3-worked_solution.html b/problem_sets/week_03/ps3-worked_solution.html index 9927124..b67d962 100644 --- a/problem_sets/week_03/ps3-worked_solution.html +++ b/problem_sets/week_03/ps3-worked_solution.html @@ -641,7 +641,7 @@ l68/length(d)
  1. Is random assignment to tents likely to ensure \(\leq1~arachnophobe\) per tent?
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Random assignment and the independence assumption means that the answer to part c is the inverse of the outcome we’re looking to avoid: \(P(\gt1~arachnophobes) = 1-P(\leq1~arachnophobe)\). So, \(P(\gt1~arachnophobes) = 1-0.84 = 0.16 = 16\%\). Those are the probabilities, but the interpretation really depends on how confident the camp counselor feels about a \(16\%\) chance of having multiple arachnophobic campers in one of the tents.

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Random assignment and the independence assumption means that the answer to part c is the complement of the outcome we’re looking to avoid: \(P(\gt1~arachnophobes) = 1-P(\leq1~arachnophobe)\). So, \(P(\gt1~arachnophobes) = 1-0.84 = 0.16 = 16\%\). Those are the probabilities, but the interpretation really depends on how confident the camp counselor feels about a \(16\%\) chance of having multiple arachnophobic campers in one of the tents.