BE205-worksheet10 by Tim Downing https://padlet.com/tim_downing1/BE205worksheet10 Add questions or answers here as text or photos or word documents en-us 2016-09-25 13:52:45 UTC 2016-11-20 15:14:15 UTC hello@padlet.com Non-parametric tests week 10 tim_downing1 https://padlet.com/tim_downing1/BE205worksheet10/wish/138936327 Q1. Using a Sign test for n=12 random mouse weight measurements, 9 are heavier than the expected weight (120g) and 3 are lighter. Determine the p value using the binomial distribution probabilities for W.
Q2. Compare the below measurements to a median expected value of 7 using a binomial distribution for a Sign test. Do this separately for A, B and C:   A: 5 6 2 5 6    B: 9 5 3 7 3  C: 7 10 11 12 12
Q3. Compare the groups to each other using a Wilcoxon rank-sum test:  A: 5 6 2 5 6    B: 9 5 3 7 3.
Q4. You infect 12 Manx mice and 10 Indian mice with MRSA bacteria and monitored their outcome each day as dead or survived for 14 days in total. Apply a Wilcoxon rank-sum test where the Manx outcomes are: 2, 3, 3, 4, 4, 5, 5, S, S, S, S, S. And the Indian outcomes are: 1, 1, 2, 2, 3, 3, 3, 4, 5, S. Are their median survival rates different? 
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