credit is a loan arrangement in which there is no set number of payments. (13-1)
STAT-5615: Statistics in Research I Lecture 6 Con▯dence Intervals Ott & Longnecker 4.12, 5.2, 5.3, 5.7 Dr. Christian Lucero Virginia Tech Fall 2016 Topics for this Lecture 1. The General Idea Behind Interval Estimation. 2. Student’s t Distribution 3. Con▯dence Intervals for a single mean m when s is known. 4. Con▯dence Intervals for a single mean m when s is unknown. 5. Interpretation of the Con▯dence Interval. 6. Factors that control the width of CIs. Review 1. Sample Variation and Point Estimation 2. Probability and Probability Distributions 3. Random Variables I Understand the di▯erence between the notation X and x, similarly for and x. 4. The Normal Distribution 5. The Central Limit Theorem 6. Sampling Distributions Review I If a random variable X is normally distributed with mean m and standard deviation s, then we den▯tN (m, . I We often wish to ▯nd probabilities (a