The information below is the number of daily emergency service calls made by the volunteer ambulance service of Walterboro, South Carolina, for the last 50 days. To explain, there were 22 days on which there were 2 emergency calls, and 9 days on which there were 3 emergency calls. Number of Calls Frequency0 81 102 223 94 1Total 50a. Convert this information on the number of calls to a probability distribution. b. Is this an example of a discrete or continuous probability distribution?c. What is the mean number of emergency calls per day?d. What is the standard deviation of the number of calls made daily?

Partnerships are the most common type of business firms in the world. t/f

Ajustification for job training programs is that they improve worker productivity. suppose that you are asked to evaluate whether more job training makes workers more productive. however, rather than having data on individual workers, you have access to data on manufacturing firms in ohio. in particu- lar, for each firm, you have information on hours of job training per worker (training) and number of nondefective items produced per worker hour (output). (i) carefully state the ceteris paribus thought experiment underlying this policy question. (ii) does it seem likely that a firm’s decision to train its workers will be independent of worker characteristics? what are some of those measurable and unmeasurable worker characteristics? (iii) name a factor other than worker characteristics that can affect worker productivity. (iv) if you find a positive correlation between output and training, would you have convincingly established that job training makes workers more productive? explain.

True or false: a smart store layout moves customers in and out as fast as possible. a) true b) false