Acoach wants to know if baseball players who warm up before a game will score more points than those who don't warm up. he will break the team up into two groups and make sure each player gets equal time on the field. he will then count how many points each player makes during the game. what statistic should he study?

the mean number of points earned by each player
the standard deviation of the number of points earned by each player
the standard deviation of the number of points earned by each group
the mean number of points earned by each group

The mean number of points earned by each player.

Step-by-step explanation:

I  am just rewriting the answer before me in a more understandable fashion. It is the same answer, yet still lacking an explanation. Hope this will make it easier for anyone else confused by the grammar of the above answer.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x