2. A linear model for the data in the table is shown in the scatter plot. x y
1 2
2 6
5 6
6 9
7 11
9 10
10 13

(a) Which two points should you use to find the equation of the model? Circle the points on the graph.
(b) What is the slope of the linear model? Show your work.
(c) What is the equation of the linear model in point-slope form?
(d) What is the slope-intercept form of the equation you wrote in Part (c)? Show your work.
(e) What is the equation for the least squares regression line? Round the values for a and b to three decimal places. (Hint: Use a calculator or spreadsheet program.)

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

According to the general equation for conditional probability, if p(ab) = 4/5 and p(b)= 5/6, what is p(a|b)? a. 8/9 b. 35/36 c. 24/25 d. 15/16