Quincy and ray keep track of their scores in a game. the person with the greater score is winning the game. quincy has a score of –70, and ray has a score of –60. part a: who is winning? explain how you know they have more points. part b: how many points away from 0 is your answer to part a? part c: write an equation to show how you know your answer to part b:

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.