Question

12. After 9 games, the mean number of goals scored by a football team is 3. If after one more game.
i they score 5 goals, what is the new mean value of goals scored?
ii they score no goals, what is the new mean value of goals scored?
(iii) the new mean value of goals scored is 2.9, how many goals did they score in this
game?




Please help me.....
,⭐and​

Answer 1

Answer:

3.2

Step-by-step explanation:

number of games =9

original mean = 3

let the number of goals scored in first 9 games be = X

Then

X/9 = 3

x = 27

Now

total goals = 27+ 5 = 32

total matches= 10

New Mean = 32/10 = 3.2