THIS IS THE QUESTION

17.1 Test the following sequence of observations by using the runs test and a = .05 to determine whether the process produced random results. X X X Y X X Y Y YXYXYXXYYYYX 17.2 Test the following sequence of observations by using the runs test and a = .05 to determine whether the process produced random results. MMNNNNNMMMMMMNNMMMMMNMM NNNNNNNNNNNNNMMMMMMMMMMM How strong is the correlation between crude oil prices and prices of gasoline at the pump? In an effort to estimate this association, an oil company analyst gathered the data shown over a period of several months. She lets crude oil prices be represented by the market value of a barrel of West Texas intermediate crude and gasoline prices be the estimated average price of regular unleaded gasoline in a certain city. She computes a Spearman's rank correlation for these data. Crude Oil Gasoline $14.60 $3.25 10.5 3.26 12.30 3.28 15.10 3.26 18.35 3.32 22.60 3.44 28.90 3.56 31.40 3.60 26.75 3.54