2. The scatterplot below shows the amount of time a trumpet player spends practicing a song, and the
number of incorrect notes she plays while performing that song. Based on this graph how many incorrect notes will she play if the practice time is 7 1/2 hours?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Which one ? is the answer and how to find this answer

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box