A director of a social service agency is planning to hire temporary staff to assist with intake. In making plans ...

     A director   of a social service agency is planning to hire temporary staff to assist with   intake. In making plans, the director needs to know whether there is any   difference in the use of the agency at different seasons of the year. Last   year there were 28 new clients in the winter, 33 in the spring, 16 in the   summer, and 51 in the fall. On the basis of last year's data, should the   director conclude that season makes a difference? (Use the .05 level.)   Explain your answer to a person who has never taken a course in statistics.   (This problem is like the Harter et al. example in which you are doing a chi   square for a single nominal variable. It is not a chi-square test for   independence and does not involve any contingency tables.)