4. The scatter plot shows the number of hits and home runs for 20 baseball players who had at least 10 hits last season. The table below shows the values for 15 of those players. The model, represented by y = 0.15x – 1.5, is graphed with a scatter plot. 40 30 10 100 150 200 hits Use the graph and the table to answer the questions. a. Player A had 154 hits in 2015. How many home runs did he have? How many was he predicted to have? b. Player B was the player who most outperformed the prediction. How many hits did Player B have last season? c. What would you expect to see in the graph for a player who hit many fewer home runs than the model predicted? hits home runs predicted home runs 12 2 0.3 22 1 154 26 145 11 1.8 21.6 20.3 110 16 15 57 3 7.1 149 17 20.9 29 2 2.9 13 0.5 18 1 1.2 86 15 11.4 163 31 23 115 13 15.8 57 16 7.1 96 10 12.9 home runs

The ordered pairs below give the winning times (in seconds) of a 100-meter freestyle swim race at a regularly-held competition from 1984 through 2012. (1984, 54.22)      (2000, 52.13) (1988, 53.23)   (2004, 52.14) (1992, 52.94)   (2008, 51.42) (1996, 52.80)   (2012, 51.30) (a) Sketch a scatter plot of the data. Let y represent the winning time (in seconds) and let  t = 84 represent 1984.   (b) Sketch the line that you think best approximates the data and find an equation of the line. (Round the slope and y-intercept to one decimal place.) y =          (c) Use the regression feature of a graphing utility to find the equation of the least squares regression line that fits the data. (Round the slope and y-intercept to two decimal places.) y =

Use a stem-and-leaf plot to display the data, which represent the thickness (in centimeters) of ice measured at 20 different locations on a frozen lake. Describe any patterns. 5.8 6.3 6.9 7.2 5.1 4.9 4.6 5.8 7.0 6.8 8.2 7.5 7.2 5.8 7.2 8.0 7.4 6.9 5.9 4.9 Determine the leaves in the stem-and-leaf plot below. Key: 3|3 = 3.3 Ice Thickness 6| 8 What best describes the data? A. Most thicknesses are greater than 7 centimeters. B. Most thicknesses are 6 centimeters. C. Most thicknesses are between 5 and 8 centimeters. D. Most thicknesses are less than 5 centimeters.

Use this data which give the dosage levels for a particular drug and the heart rate measured 30 minutes after taking the drug. Dose (mg) Heart rate 0.125 95 0.20 90 0.25 93 0.30 92 0.35 88 0.40 80 0.50 82 Create a scatter plot.  Use your Ti-84

The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. 11.5 8.4 6.8 3.4 2.5 2.6 2.6 0.9 13.5 10.9 9.8 6.7 6.3 6.4 4.5 x = thousands of automatic weapons y = murders per 100,000 residents This data can be modeled by the equation 0.83x + 3.99. Use this equation to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. A) How many murders per 100,000 residents can be expected in a state with 8.4 thousand automatic weapons? Answer Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 7.3 thousand automatic weapons? Answer Round to 3 decimal places.

The scatter plot shows the number of hours worked and money spent on entertainment by each of 24 students. Also shown is the line of best fit for the data. Fill in the blanks below. 70 65 60 55. Amount of 50 × 45 money spent on entertainment 40+ (in dollars) 35. × × 30 25 20 15. × 10+ 5-x 0 6 8 10 12 14 16 18 20 22 Number of hours worked (a) For these 24 students, as the number of hours increases, the amount of money spent tends to (Choose one) (b) For these 24 students, there is (Choose one) money spent. correlation between the number of hours worked and the amount of (c) Using the line of best fit, we would predict that a student working 8 hours would spend approximately (Choose one) ▼ ك ?

Find the five number summary and draw a box and whisker plot of the data. 4 8 8 6 2 9 8 7 9 6 9 4 2 6 2 9 8 7 7 9

Please do not give solution in image format thanku