In the following set of data: (1 3 5 6 7 9 100), what is the interquartile range? 1) 3 2) 9 3) 99 4) 6 What is the value of the Pearson coefficient of skewness for a distribution with a mean of 10, a median of 8, and a variance of 144? 1) -0.5 2) -1.0 3) +1.0 4) +0.5 Refer to the following information from a frequency distribution for "heights of college students" recorded to the nearest inch: the first two class midpoints are 45" and 55". What are the class limits for the third class? 1) 40 and up to 50 2) 50 and up to 60 3) 60 and up to 70 4) 45 and up o 55 Refer to the following breakdown of responses to a survey of room service in a hotel. Response Frequency Not Satisfied 20 Satisfied 40 Highly satisfied 60 What percent of the responses indicated that customers were either satisfied or highly satisfied? 1) 100% 2) 83% 3) 60% 4) 33% A contractor offers two roof types, four siding styles, and three design options that could be combined together. How many different arrangements can be offered? 1) 48 2) 6 3) 3 4) 24