1. A business manager wanted to test the productivity of her employees for the hour before lunch and the hour after lunch. Her building has 5 floors, so she divided them into 5 groups based on floor and randomly selected one floor. she decided to observe all of the 4th floor both before and after lunch.

a. What type of sampling did she use?

b. Identify the population and the sample.

2A. Use the following data to answer the next 4 questions.

To study the physical fitness of a sample of 28 people, the data below were collected representing the number of sit-ups that a person could do in one minute.

8	11	12	15	15	15	19
21	22	25	26	27	33	33
34	37	40	40	40	40	42
43	47	47	48	52	78	92

2B. What is the lower fence for the sit-up data? 2C. What is the upper fence for the sit-up data? 2D. Are there any outliers? If so, list them. 2E. What is the mean of the sit-up data? Round to two decimal places

2F. What is the median of the sit-up data?

2G. What is the standard deviation of the sit-up data? Round to two decimals

2H. What is the range of the sit-up data?

2I. What is the midrange of the sit-up data?