Answer:
mean = 12.9
median = 9.5
Step-by-step explanation:
mean = sum of all observations / total no. of observations
= 7+9+10+6+8+12+5+11+48+13 / 10
=129 / 10
= 12.9
median = middlemost no. after arranging in ascending order
= 5,6,7,8,9,10,11,13,48
=9 and 10
=9+10 / 2
= 19 / 2
= 9.5
44 minutes
I would set this up as a proportion-
20 x
5 11
Then cross multiply-
20 x 11 = 220
Divide-
220/5 = 44
It would have him 44 minutes to read 11 pages
7
9 - 8 + (2 x 3)
9 - 8 + 6
1 + 6 = 7