Quiz 4 for Probability and Statics | MATH 1530, Quizzes of Statistics

Download Quiz 4 for Probability and Statics | MATH 1530 and more Quizzes Statistics in PDF only on Docsity! Probability and Statistics (MATH 1530-017) Attendance Quiz, April 21, 2009 NAME E-NUMBER Pick the letter of the best answer. The problems are worth 2 points each. 1. The most important condition for sound conclusions from statistical inference is usually (a) the confidence level is 100%. (b) that the data can be thought of as a random sample from the population of interest. (c) that the population distribution is exactly normal. (d) that the confidence interval includes all possible values of the population parameter. 2. For a confidence interval calculated from a given SRS, as the level of confidence goes up (a) the width of the confidence interval goes up. (b) the width of the confidence interval goes down. (c) the probability of a Type I error goes up. (d) the probability of a Type II error goes up.