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.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950