Question

Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of O°C andra standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find P2, the 12-percentile. This is the temperature reading separating the bottom 12% from the top 88%. P12

Answer 1

X: Reading of thermometers in oce at the freezing on a batch X NCHI = 0,621) we want to find Pia Pia= P(x cal = 0.121 Here N(u=0, 6-1) is std Nermal disan P(x cal = 0.12 from the Std pannal table, lind 0.12 in probabilite, compeading row is and column is 0.075 -> A=175 PCX Ralf75 - 0.12 Pitch-145) = 0.12 Piz= al.175 .- 2 P driw dzi ofisior deb Pin = [1,175 °