19.

The following quarterly time-series data was used to estimate the trend line and seasonal indexes: Year Quarter Period | Sales 2005 First 44.4 Second 44.8 Third A CO N 47.8 Fourth 63.1 2006 First 41.8 Second 46.7 Third 45.3 Fourth 69.8 2007 First 9 47.2 Second 10 49.8 Third 11 50.2 Fourth 12 71.8 The estimated trend line for the data is Y = 43.55 + 1.28t. The seasonal indexes are found to be 0.894, 0.922, 0.914, and 1.270 respectively. What is the deseasonalized value for the second quarter of 2007?A chain restaurant considers introducing a new loyalty program. To test its effectiveness, the manager decides to compare sales before (population 1) and after (population 2) launching the program. She runs the pilot version of the loyalty program in 6 randomly selected locations and collects monthly (seasonally adjusted) sales data (in thousands) before and after introducing the program. If there is an increase in sales, the program is effective and should be used in all locations. Location Sales before Sales after 20.1 22.3 21.5 21.6 19.8 19.0 34.6 37.2 15.3 16.0 55.1 53.2 What is the value of the appropriate test statistic? Select one: O a. -0.6847 O b. 0.2192 O c. 1.2300 O d. -0.80 O e. -0.2192