6.  The following are Blood Alcohol Contents (BAC’s) of a random sample of drivers arrested last New Years Eve in Gainesville by the Florida Highway Patrol (FHP):  0.09, 0.11, 0.14, 0.25, 0.09, 0.20, 0.10.  Assume that the population of BAC’s is normally distributed.  Find and interpret a 95% confidence interval for the mean BAC of drivers arrested on New Year’s Eve in Gainesville by the FHP.  (h) Interpret the 95% confidence interval for the population mean BAC of drivers arrested on New Year’s Eve in Gainesville by the FHP.

2. Describe what s2 measures (using words rather than a formula).  Please use a complete sentence. 

1. (a) What is a statistic?

5. A professor at Santa Fe College for STA2023 collected data from one of her classes in the Fall of 2017 to investigate the relationship between study time per week (average number of hours) and college GPA. The data for males in her class is given below: Study hours per week 5 6 10 12 13 15 21 25 GPA (grade point average) 2.7 3.0 3.1 3.3 3.2 3.4 3.8 3.6 Find the equation of the regression line using the least squares approach.  You may use the appropriate procedure in your calculator to help you find the solution.  Clearly label, the slope, the y-intercept and the regression equation. (a) What is the slope?

Variables that follow, or trail, changes in overall economic activity; such as interest rates and duration of unemployment

Any diversion of income from the domestic spending stream; includes savings, taxes, and imports

Structural features of government spending and taxation that reduce fluctuations in disposable income and thus consumption, over the business cycle

According to “Last Word: Less Than Zero,” when the European Central Bank sent its federal funds rate below zero, it was trying to force banks to

The number of Federal Reserve Banks in the United States totals

According to “Last Word: Extend and Pretend,” during a financial crisis, the FED makes loans to firms that can post