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Exercise

Learning about a percentile

Suppose you want to learn about the 75th percentile of the sampling distribution defined by: $$Q75 = M + 0.674 S$$

Instructions

100 XP
  • Examine the code that simulates 1000 values from the posterior distribution of (M, S).
  • Use the coef() and sigma.hat() functions to extract simulated vectors of M and S from sim_fit.
  • Compute simulated posterior values of the 75th percentile and save the result as Q75.
  • Construct a histogram of the posterior of Q75.
  • Find a 70% probability interval for Q75.