STAT 263 Lecture Notes - Lecture 7: Binomial Distribution, Skipping Rope, Standard Deviation

• School: Queen's University
• Department: Statistics
• Course: STAT 263
• Professor: Charles Arthur Molson

Document Summary

Review session for term test. Practice questions: a rando variable x is binomially distributed w n=55, and p=0. 25. Use the normal approx. to the binomial (w correction to continuity) to approx. P(xd>15)=p(xc>15. 5) don"t want to include the 15 box so use 15. 5. Answer=0. 293: for a discrete probability situation det, p(8< x < 18)= p(x < 18) - p(x < 8) Use the #s to the left of [ or : p(3< x < 10), p(6 < x <13)= Mode, down, 2 for normal cd. Upper bound=any high #, ex 50. Answer=0. 0504: the distribution of length of skipping rope is normally distributed w a standard deviation of sigma=0. 200m. You slept when the worker told you the mean length but you hear the. 5the percentile of this distribution if 2. 17cm. Area under curve to the left=0. 05. Mode, down, 3 for inverse. 1. 644=2. 17- mu/0. 20 mu= 2. 50: if a variable x is normally distributed w sigma=9. 55.