Back[NOW WORK] [DATA] The Other Old Faithful Perhaps you are familiar with the famous Old Faithful geyser in Yellowstone National Park. Another Old Faithful geyser is located in Calistoga in California’s Napa Valley. The following data represent the time (in minutes) between eruptions and the length of eruption for 9 randomly selected eruptions. The coefficient of determination is 83.0%. Provide an interpretation of this value.
Use the linear correlation coefficient given to determine the coefficient of determination, R squared. Interpret each R squared.
a. r = -0.32
b. r = 0.13
c. r = 0.40
d. r = 0.93"
[DATA] Putting It Together: Cigarette Smuggling Go to www.pearsonhighered.com/sullivanstats to obtain the data file 4_3_33. The data represent the 2015 tax rate per pack of cigarettes and the percent of cigarettes smuggled as a percentage of total consumption. A negative value of consumption represents a net outflow of cigarettes while a positive value represents an inflow of cigarettes. For example, in Alabama, 7.5% of all cigarettes purchased leave the state. In Arizona, 44.8% of all cigarettes consumed are smuggled into the state. Alaska, Hawaii, North Carolina, and the District of Columbia are not included in the analysis. Describe the data and write an article that discusses the impact that cigarette taxes may have on smuggling.
Problems 7–12 use the results from Problems 27–32 in Section 4.1 and Problems 17–22 in Section 4.2.
a. Determine the coefficient of determination, R^2.
Problems 7–12 use the results from Problems 27–32 in Section 4.1 and Problems 17–22 in Section 4.2.
b.Interpret the coefficient of determination and comment on the adequacy of the linear model..