A survey which asked about study time and exam score has data as shown on the scatter plot. The least squares line was also graphed and the equation is below. e = 1.04 t + 38.4 100 90 80 70 60 10 20 30 40 50 60 50+ Study Time, t [minutes] For a student who studies for 28 minutes, use the equation to predict the exam score. Round to the nearest whole number. Select an answer Exam score, e [points]

The ages (in years) and helghts (in inches) of all pitchers for a beseball team are listed. Find the coefficient of variation for each of the two data sets. Then compare the results. -Click the Icon to view the data sets. CV. %D Round to one decimal place as needed.)

Match the coefficient of determination to the scatter diagram. The scales on the x-axis and y-axis are the same for each scatter diagram. (a) R? = 0.12, (b) R2 = 0.98, (c) R? = 0.58 (a) Scatter diagram Eplantory (b) Scatter diagram (e) Scatter diagram Esplanatory II Eplanatory

The value of a certain car when it was brand new with 0 mileage was $17,000 but the value dropped to $4,000 when the car acounulated 80,000 miles shown in the scatter plot below. Car's Mleage and Value S17.000 $2,000 Mileage Based on the data in the scatter plot, at what mileage was the car worth about $12,000? O 20,000 miles O 30,000 miles O 60,000 miles O 80,000 miles

please provide a clear solution and answer within 30 minutes, thank you!

A real estate company wanted to see the relationship between home prices and square footage of homes for sale. The regression line is ŷ = –802,456 + 144x, where x is the square footage of a home. Complete the statement based on the information. For every -square-foot increase, the predicted home price is predicted to increase by $

The data show the chest size and weight of several bears. Find the regression​ equation, letting chest size be the independent​ (x) variable. Then find the best predicted weight of a bear with a chest size of 48 inches. Is the result close to the actual weight of 538 ​pounds? Use a significance level of 0.05.

r= -0. 8839 (e) Find the value of the coefficient of determination r2. What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained?  r2 =   explained       % unexplained

using the picture included to answer Besides a bar chart, what would be another appropriate graph to display this data set?

A high school has 44 players on the football team. The summary of the players' weights is given in the box plot. Approximately, what is the percentage of players weighing greater than or equal to 234 pounds? 166 203 234 154 256 - 0o 150 160 170 180 | 190 200 210 220 230 240 250 260 270 00 Weight (in pounds)