Questions 15 refer to the sample data in the following table (based on data from the Bureau of Labor Statistics). The table lists frequencies for randomly selected nonfatal occupation injuries arranged according to day of the week. Assume that we want to use a 0.05 significance level to test the claim that such injuries occur with equal frequency on different days of the week. Day Mon Tues Wed Thurs Fri Number 23 23 21 21 22 If using a 0.05 significance level to test the stated claim, find the number of degrees of freedom and the critical value

Week 7: Probability Distributions 18 October 2016 Basic Statistics for Research Professor HK Dong Wendy Liu Baye’s Rule – given k mutually exclusive & exhaustive events such that and an observed event A, then Permits revising old probabilities based on new info o Prior probability – associated w/ B andbefore we know status of A and o Posterior probability – updated probability of B Application of conditional probability Mutually exclusive events Intro to probability distributions Random variable – represents a possible numerical outcome from an uncertain event Probability distribution – list of the distinct numerical values of discrete random variable X al