1. A civil engineer monitors water quality by measuring the amount of suspended solids in a sample of river water. Over 12 weekdays she observed the following suspended solids in ppm. 12 21 28 30 63 29 63 55 19 20 7 14 a) Find the mean b) Find the median c) Find the variance d) Find the standard deviation 2. The followings are the numbers of minutes that a person has to wait for a bus to work on 15 working days 10 13 9 5 9 2 10 3 8 6 17 10 19 15 1 a) Draw a Box plot of the waiting times b) Indicate on the Box plot the mean, median, quartiles and outliers 3. The U.S women Olympic soccer team had a great year in 2004. One way to describe the players on that team is by their individual heights. Heights (inches) 68 67 65 64 71 57 65 66 65 67 64 69 69 66 67 68 66 654 71 a) Construct a frequency histogram of the distribution b) Prepare a relative frequency distribution of the data c) What percentage of the team is at least 5 feet and 6 inches tall? 4. The amount of paper disposed is a function of family size. lbs paper) family size) 0 1 2 3 4 3 5 7 9 11 Calculate the coefficient of linear correlation